They seem to be of the opinion that since I don’t have little clones of myself running around that my free time is inherently less valuable.
No Sam, I’m not working two doubles so you can make it to little Timmys fucking music recitals. Bringing that little shit into the world was your fucking choice you dumbass!
Sorry, needed to vent.
It's not a zero-sum game between you and your coworker(s). Your employer just makes the rules that frame it that way.
Everybody should be able to work just ~30 hours a week and have plenty of opportunities to be involved in the lives of family members.