Girls: Wouls you care if your boyfriend wears briefs?

I am a junior in high school. I like to wear the white fruit of the loom and hanes briefs. Most guys my age don't wear these i think. Do most guys wear briefs? I herd that they are for children and old men. Is my kind consider tighty whities? Why do girls despise them. I want to sag with them because most girls think its hot if a boy sags with boxers. Is it okay for a 17 year old to wear them? I cant stand boxers at all also. Do i have to switch to boxers?