Let me preface this by saying I am a man, and smoked a little too much, so I'm sitting here thinking... what is or was the original purpose of a bra? Weight support? Vanity? Covering the nips so people's eyes met your eyes and you can have a normal conversation? Like what's it all about?
I’ve got a childhood friend who got a reduction because she had back problems after she went through puberty, and it basically led to her having chronic pain for a while in college. She’s WAY happier at a C-cup than whatever size she had before.
Edit: curious what the downvotes are for. This is absolutely a real thing. Downvoting me for sharing a thing that real people actually struggle with isn’t going to make them struggle with it less. And on the hunch that the downvotes are dudes: if you have a female partner, or a female friend who you can ask these sorts of things to, ask them to confirm that it is real, and they will be happy to.