Obviously I'm coming at this from a completely different place but I was busty albeit a large cup on a small frame - 28f. I had a very complicated relationship with my breasts. Although I knew aesthetically, they were perfect -- shape, size, nipple, nipple placement, pertness, etc etc, but for me, they spoilt the line of clothes. They also made me visible in a way I did not feel comfortable with. I hated men talking to them, and objectifying me for them. I know a lot of the men I have dated have dated me because of my physicality.
Now I have no breasts, I honestly can't imagine a man finding me physically attractive. (Most) men are hugely visual. (Many) men are terrible when women get sick, particularly if it's cancer). It's not even that I don't have breasts, it's that I have two huge scars on my chest that very much are a constant reminder that I had cancer and could get it again. However, this is a whole other point.
Prior to my first mastectomy, I did go see an older friend who had breast cancer and a double mastectomy twenty years or so ago. I did not like the reconstruction work she had, and that did make me decision to not have a reconstruction even more certain. She also confided that if she could go back and do things differently, she would have remained totally flat. (I most declined a reconstruction because the surgeon couldn't replace what I had. And let's not forget, there's no sensation anyway, so it's not even a breast, it's just a facsimile of one).
Post surgery, I have no sensation and at times, I get phantom breast pain which drives me crazy. I also get an itch that no matter how hard I scratch, I can't get to it because it doesn't exist. Again, it's phantom pain. I have limited movement in my arms and my chest aches a lot. As someone who always slept on their stomach, I can't do this now due to lack of (breast) padding. A cushion just isn't the same. I also can no longer sleep on my right because it's too bony. Again, lack of breast padding.