Mine aren't sensitive at all, I'm guessing that it's going to be a blessing if I ever breast-feed. Maybe if your ex's were too sensitive, you play with ice... numb them up a little, no idea.
Mine aren't as sensitive as they used to be since I breast fed the munchykins. I think it has something to do with the scarring from splitting and cracking and bleeding.
Ooops too much info? Sorry, not sensitive here, best of luck with those who are. *lol*
I guess that my nipples are sensitive a little bit, but not really. Any attention there could enhance an experience, but could not really be the experience...
I think it may have to do with the fact that I've had them pierced twice... maybe something happened to the nerves or something?
My breasts themselves are very sensitive, though--especially the undersides...