As a gay man, I am not attracted to tits.

Big booty in yoga pants is way hotter than big tits in low crop tee

Anyone can be born with a nice set of tits, but it takes effort and work to have a great ass. Plus the shape of the ass is a better indicator of the general shape of the body.

Asses have a different dynamic. Plus they're better to squeeze.

As a woman, big boobs can be annoyingly heavy and bounce around when exercising. It's also frustrating to find a comfortable bra (bras in general are unnecessarily expensive too). Butt muscles help support posture and add lower body strength. Just a new, un-sexualized perspective for you all ;)