Men’s pants can be a lot more loose around the waist and we typically have no butt to hold things up.
You know, in my jealousy about the capacious pockets in men’s pants, I never thought about how they must weigh the pants down when they’re full of keys and wallet and phone and tampons and condoms and stuff. No wonder y’all need belts!
Before I transitioned I used to wear cargo pants. (When presenting male, I didn’t give a fuck what I looked like lol). I put so much stuff in those pockets, including a charger for my laptop. My pants were so heavy I had to wear suspenders to hold them up - a belt wouldn’t cut it.
A lot of jeans don’t have a good cut for an athletic man butt that I have built from 30 years of sports, mostly hockey. I end up tearing out the crotch on all my pants because I can’t find the right cut.