Breasts are even more than to feed and nurture her young and sexually please a man. I know for me, its a huge turn on to have my breast touched, they're very sensitive. Even that area on a man is sensitive; I know I've used that as part of foreplay with my bf.

I agree with Inny. Maybe the lack of being turned on by random breasts just means you're growing...and that when you find the right woman it won't be such an issue. I know that for me, since I've found the right man, I don't get turned on by random men anymore. So maybe thats it.