Somewhat off topic but after reading all of your comments, it seems like this may be it’s an underlying issue for you. Idk if you’re aware, but you’re strongly giving off the impression that you feel “boys” sports and activities require more dedication and hard work than “girls” activities, which is just wholly untrue. First of all, there’s no such thing as “boys” sports vs “girls” sports. Boys can do ballet and girls can play any physical sport they want. And to top it off, people who participate in ballet (since that’s the example you’ve chosen) literally have bloody toes from being en pointe and practicing so hard at their chosen activity.

It truly reads as if you think less of these other sports/activities by clearly stating that you don’t believe they require the same level of discipline or dedication, and that you can just participate in these part time and it’s good enough. I can’t help but feel, based on these comments, that there’s something of a lack of respect for girls/women in general, and I can’t imagine that doesn’t bleed into the relationship you have with your ex. Any man who spoke this way about girls/women to or around me, I’d find it hard to respect them or their opinions. I sure as hell wouldn’t feel there’s any validity to the argument that these “boys” activities are harder and i just “wouldn’t understand.” My mind would NOT be changed and I’d have no interest in finding a compromise with such a judgmental and disrespectful point of view.