His response to the scent marking by his XW and their spawn does not reduce his duties in your home, life, and marriage. Stop taking on more in the home. In fact, put more on him.  Work time is from the time the first of you leaves for work until the last of you gets off of work. Being a blood hound following the scent marks of his X and their spawn is not work. So, when he gets home, hand him the recipes for cooking dinner, broom, mop, sponges, cleaners, and the chore list that he has to have done before he gets to shower and come to bed. When he comes to bed, he services your emotional and physical needs.  Then, he can sleep.  Of course you have your half of the chore list done so you can diligently supervise him in getting his done.

I stole the emotional and physical needs thing from another STalker. It applies here I think.

He needs to clearly see what he owes you, the marriage, and your marital home and HE needs to figure out how to deliver on all of that in addition to working and earning a full time income. Servicing his XW and their spawn he has to do after or in between when he mans up on everything else.

IMHO.

I am furious for you.  I hope you realize that his never ends.  His XW and their spawn are a lifetime drama burden that the odds of them ever ending is slim and none at best.  These shit shows tend to only get worse once the SKids reach Skidult status.

Of High School sports.  DH can't take every Saturday to go to his kids sporting events. He has other duty's at home 

"This is all he has left."

I disagree. He still has you ... but for how long?

I agree with doing nothing while he's at the Saturday events or do something nice for yourself... Treat yourself. I don't feel he should go to ALL of the games.. He should take some to spend with you too. He can miss the odd game (imo) because he shouldn't shirk his other household duties and being able to spend quality time with you on weekends too. It is a win for you at least that he doesn't try to guilt you to attend this stuff any longer. Maybe he's starting to get it. 

I personally think your DH should decline all unilateral decisions BM makes that impact resources in your household 

some of these BMs are using their kids to have their ex (your DH) resources of time and money tied up as a way to turn it into a kid centric operation

However if he agrees then like others mentioned .... do what YOU want to do those days

This reeks of massive BM game playing and ridiculousness. It's a power play. SO should find a happy medium. BM is going to badmouth him (and skid will go no contact, you believe), anyway.  But if you're going to ride it out, I agree with the idea of you doing something good/fun for yourself vs taking on more housework. 

When did it become normal for these kids to play any and all damn sports?! What happened to doing maybe 2 sports and becoming really good at those 2 sports.... When did it become normal for kids to be doing cross country, soccer, football, basketball, baseball and track and field. Like wtf. How do these kids think they are going to be good at all these sports when they don't practice an individual sports long enough to become good at them?

I'm glad you've gotten out of the participating in taking to all practices and games and such. I wish I was able to bail on that more without the guilt trip. On one hand having some Saturdays all to yourself will be beneficial but can make you feel that your life with your SO isn't free for you and him to make plans.

In my simple world, never forget that guilt is a choice. So stop that.

Make a better and different choice for you.

I am a solid supporter of no pass no play and firm sportsmanship standards.

Kids who are raised with the delusion that they are special by their mere existence without having to perform at a level that truly is special take away from the experiences of those actually making the effort and doing the work to improve.

Sadly, a massively profitable industry has grow up around those who are not special, do not perform at a notable level, and there are a shit ton of parents who will pay so they can sit with all of the other parents and grin about little Skippy and Skippette and how "spe-cial" they are. You can tell the truly invested parents of kids who are busting their butts to be good at the sport or activity. They are the ones rolling their eyes and turning their heads when the mommies and daddies of Skippy and Skippette are blathering about how wonderful and skilled the barely able to walk without tripping over air kids are. You know, the kids who slouch on their way to the plate for their at bat knowing they have not put in the work to actually be able to hit the ball then harp about how the coach is mean and they are the best but regularly get benched.

These kids and their parents need to watch the movie Rudy.  A based on IRL story about a kid who had zero talent but had heart, grit, showed up for his team, did his part, and did get in the game because he earned the respect of his team mates and his coaches.  Or the movie Greater. Another based on IRL story about a fluffy untalented kid who dreamed of playing for a top tier college team.  He walked on, showed up every day, busted his butt, built his skills and physical prowess, won a scholarship position, captained his team, ended up an All American and top NFL draft prospect.

Special is not always about genetic advantages. It can be about character, commitment, effort and becoming great rather than being born great.  Much of that is not just about the kid but also about their upbringing, having quality parent examples, etc......  Great is not always about being the proverbial "NFL draft prospect".  It can be far more modest than that.  But is is always about doing the work.

IMHO of course.

Sadly there are some truly talented kids raised by shit parents. Those are the kids who get lippy with coaches, show boat, and over an over inflated opinion of themselves and look down on everyone else from their lofty perch of characterless superiority. I can't stand those shit spawn or their parents.

I volunteered as an Umpire for youth baseball leagues during the summers while I was in HS and University.  My tolerance for those kids and their parents was just about zero. I ejected several lippy kids, their lippy idiot parents, and an occasional pushy coach.  There were a number of weekends and tournaments where when I showed up and took my position behind the plate the murmuring would be notable.  I had a number of parents thank me for keeping the shit people and shit kids in their place. I had far more complain about me. Oh well.  Don't be a shit person and don't raise your spawn to be little shits and we won't have a problem.  And yes, I am the one who decides who is shit and who isn't. Just as everyone else has that ability in their own lives.

The kids who don't try and then blame everyone but themselves... I can't stand them or their idiot parents either.  Go, participate, be a team player, do your part but do not detract from the experience of all of the other kids or detract from the enjoyment of the quality parents actually supporting their kids efforts, rather than putting on airs.

IMHO of course.