Growing up, the thought of women walking around without a bra on was pretty shocking. It was a super outlandish, unsanitary(what?) thing for someone to do. Only hippies go around without bras and that because they are on something. That was pretty much my relatives mindset.
With the prevalence of breast cancer and a lot of other now common health issues that effect us as women, I think that it important that we do everything we can to be as healthy and open minded as possible.