Usually reasonable parents split the cost of extracurricular activities after agreeing on them. Set up your boundaries. You want the best for your kids but the ability to provide 'extras' changes in divorce.
"Reasonable" is the key word. Why would the WAS all of a sudden become reasonable?
My XW wanted me to pay for extracurriculars on top of significant alimony and child support (you may remember that). I tried to get her to share expenses, but she would tell me (and our D) that she couldn't afford even half. So if I didn't pay, D wouldn't get to participate ("You can't go to camp because dad won't pay for it"). I could have dug in my heels and held my ground, but in the end decided sucking it up rather than getting into a prolonged fight about it was in D's best interest. I'm sure something similar will happen with her college expenses coming up in a few years.
Me45 W35 M6 T8 D16 SD11 D0 Dec 07: Bomb July 08: Busted! Thread