I haven't had top surgery, but I did have a breast reduction seven years ago (and how I wish they had reduced them right off...). The surgeon did warn me about possible loss of sensation and possible loss of ability to breast feed. Even back then, I knew I didn't want kids. As for sensation, I really didn't care, I just wanted them smaller (gone). I do still have sensation in my nipples, but I'm not quite sure if it is erotic sensation. I'm still a virgin, and I am so disconnected from my breasts that I've never gotten pleasure from them. My natural reaction when someone gets close is basically to smack that person, in all cases. I can't speak for anyone else, but if I was told that I would lose ALL nipple sensation as a result of top surgery, I would still do it.