I know you directed this at men, but I like women too soooo... I just like them to look proportional on the woman. The body type I'm attracted to usually means they are a B or C cup. I don't have a fascination with really large breasts, and fake ones are a definite no no generally because they are too disporportionate with tiny girls wanting DD's and shit.
I don't view breasts independent of the person they are attached to. You hear a lot of men say "I like to play with them". I have never uttered those words, I don't think of them as something to be curious about. They are something to touch to make her feel sexy and good and that's how I think of them. So they help her more than me during sex.
My 2 cents...