I don't like bras. For me they are very uncomfortable and it's a myth that they actually prevent sagging...the research is there. I realize that some women get physical support from a bra if they have larger breasts and it can be more comfortable for them...less movement etc. Though with regard to breasts sagging with age and time, they will eventually sag whether we wear a bra or not....gravity takes over after while....older women are very clear about that. Some research actually suggests that sagging can happen faster or be more pronounced with continual use of a bra in younger years because the breast tissue becomes dependent on the bra to hold it up.

I never wear one at home. Sometimes I go out without one provided I'm comfortable in the top I have on. I always wear a bra at work....not for comfort but because it's expected and I'd be judged as unprofessional if I didn't.

Personally, I wish the bra had never been enforced by some cultures as something women are expected to wear. I was raised to wear one all the time so even though I am much more physically comfortable without one, I still feel compelled to wear one in certain settings due to societal bias against women going braless.

That said, I have friends who say they feel more physically comfortable wearing a bra all the time so I always say each to their own.