A regular topic of conversation between a good friend and I are our "types." I've always been into skinny women with flat boyish bodies. I can attribute this to a few things:
1) I became sexually aware in the early-mid 90s when that was the look. Heroin chic.

2) I have body issues and being with a skinny person makes me feel like I'm skinny enough that a skinny person would date me.

3) The breasts are perky and stay up and are nicely round.

Recently I asked him and another friend why they and so many guys like big butts but especially big breasts. Taste is taste and explanations for what we like can only be reduced so far until you wind up with "I dunno, I just like it."

While noting that, superficially speaking, the widespread and longstanding favor for big breasts has always left me flummoxed because they droop and/or tend to fall flat. They're just not as shapely. (I should note, I'm talking about when they're natural and not in a bra, of course.)

I asked if it was just a primal male urge for reproduction. An instinctive attraction to fecundity. Both guys said, "Yeah, I'm sure that's probably part of it." But there's gotta be a more conscious aesthetic reason as well.

Now I ask ye, all lovers of breasts and buttocks of hefty haul! What drives this affinity for the well-endowed of fairer features?