My relationship with my breasts...
In short: they're..... there.
I'm one of the unlucky ones who have very large breasts (my bra size is 44 F) and I do not want them. Even before my gender concerns creped in, I never wanted breasts this large. I had to start wearing bras in 3rd grade, by 7th grade I had a D cup. When I was 13 years old they were building a Hooters at the mall, I was hanging out waiting for my parents to pick me up when the manager came over and asked if I wanted an application. (Dad wasn't so pleased with that) When I told the manager I was 13, his eyes about fell out of his head.
These days, it's similar to as Nero described. A love/hate relationship. They HURT me, bras dig into my shoulders, and leave ridges, my back hurts all the time. As Rachael explained, when you bump into things it hurts, and depending on how close my period is it can be "oh, OW!" to "OMFG !!!" And the larger you are naturally the more crap I bump into. Also painful is rolling over on them in bed, owwwie. Shirts are hard to fit into, button downs? without two bras? forget it. They're very saggy, and I'm only 26 years old. They don't look cute and feminine to me, they look... gross. I have started taking to wearing two bras, this doesn't do much for the size, but it helps with the *bouncy*. I hate the bouncy.
On the other side, they FEEL good. I love having them played with during sex. For this reason alone I got my nipples peirced in June, and thus far I love that. It did make me feel slightly better about their appearance, (as silly as that sounds, a little silver bar making me feel better). I never had the "don't touch" problems... I want them touched.
People have asked what my ideal would be. And really, I don't know. Definitely smaller, but how small? Gone entirely? Still there but significantly smaller? I'm not sure. It'd be nice to not NEED a bra, but only wear one if I wanted to. It'd also be nice not to have to deal with the pain. (Ironically about the pain, since it's constant, I don't really even notice it until it's gone. Unless it's really bad. If I actually lift my breasts up there is this incredible feeling of relief.)
So pretty much.
They're there. They get in the way. They're painful, but they also can feel quite nice. But I don't really want em. =/
All in all: Boobs for sale!