For support, to cover nipples, create cleavage, etc.

>>23650611
Are they uncomfortable without?

i have v conspicuous nips

>>23650656
... they aren't that conspicuous without a pic ...

I have a flat chest, I just wear them to shield my nips when they are hard

>>23650651
here in Canada my nips get very cold without a bra

Probably for comfort and because it's the social norm. The argument that the breast need the support is heavily contested in studies on the matter.
I know I would be very excited if women stopped wearing them, but I might also lose my mind at the same time. It's probably for the best that it is the way it is.

If you run, that shit hurts. Even walking at a pace that's above turtle speed can sometimes cause enough displacement for the jiggling to be a little uncomfortable. As for the different kinds of bras, I wear push-up bras because I like the extra support they give. I don't have to worry about falling out all over the place, and they make my tits look nice all at the same time! It's a win-win situation. Either way, bras are still annoying to wear no matter how much they may help.

>>23650651
you sew two beanbags to your chest and walk around for a day

>>23650600
>>23650651
Depends on the girl and also the size. I've got DD's. If I try to skip a bra for the day, holy shit they will be so sore and tender within an hour.
I have innie nips so that isn't an issue for me, but they do sag and become incredibly painful pretty quick without the bra holding them up.

>>23650600
This is good, honestly, and by no surprise, guys have a lot of questions about females (And I assume vice - versa?) So something like a:

Questions for the opposite gender thread?