As the only woman left, I think I’m best placed to answer you, eloisenicole! 🙂
Men find stuff interesting that they don’t have themselves…. therefore boobs are prime targets. You don’t have to go searching for them because they’re always in the same place. They’re also readily accessible and only a few inches down from your face so when some men talk to you, a select few feel the need to talk to directly your chest. This is most annoying and on many occasions I have pointed this out. Men don’t like you pointing this out because they thought they were doing it so you wouldn’t notice!
On a more serious note, it most probably dates back to when they used to breastfeed and feel calm and comforted by the sensation, so I think some of it is imprinted from an early age.
Well! First off, not all men find breasts attractive. But for those who do, I think there are a number of reasons. We don’t have them! So that makes them intriguing. Secondly, in our culture, women keep their breasts covered up in public, so there is an intimacy associated with seeing someones breasts, because you don’t see everyone’s breasts! In other cultures women don’t reveal their ankles in public, and so men find ankles really sexy.
It is interesting that men are so attracted to breasts, when at the end of the day, they are just skin and fat, like every other bit of the body!
Some people might try and argue that there is a sexual selection pressure involved, meaning that men are attracted to breasts because breasts feed their offspring.