I honestly get a little tired of the repeated "should" comments and the suggestion that because we have breasts "just like a woman" we should care for them "just like a woman." Yes, we have a hormonal stew that has resulted in development of breasts and as comments about women's clothing fitting better suggest, we often have womanly curves in hips, thighs and butt. But none of that dictates how we "should" respond to these circumstances. Granted, if heavy breasts are straining one's back it makes sense to find means of support and yes, brassieres can give that support. If nipples are hypersensitive then covering them can be helpful and a brassiere is one way to do that.
All of that said... beyond any shoulds are every person's individual preferences. Enjoying shopping for brassieres and wearing brassieres is simply that, whether we wear them full-time or occasionally. There can be aesthetic appreciation, sexual appreciation and gender play involved. There are no shoulds in any of that but it is all real. The conversation here is quite constrained. I understand the reason for that and am willing to play along. Yes, acceptance is key but acceptance is not predicated on doing this one way. Whether you wear a brassiere while visiting a doctor is simply a matter of personal preference. Whether you prefer to wear a brassiere only at home is also a matter of personal preference. If wearing a brassiere is part of your fantasy life, so be it. It makes sense to simply allow life to be just as it is. There is no need to shame ourselves over our hormonal stew and its impact on our bodies and personalities. Shoulds never help.