most women prefer big pants for comfort. but most women dont do kickboxing or martial arts. so here is the reason people who train prefer skinnies.
imagine two butts (small and peachy if you prefer)
imagine one with thongs and the other with big lacey hipster numbers
imagine both getting a wedgy from flying kicks ect...
one is already a wedgy and therefor doesnt get any more uncomfy..
the other is like having a jumper stuck between your butt cheeks.
point made.