[rmc]

I'm sure the gay males and the straight women wouldn't want to see a tub of lard (excuse my language) in a male

You seem to have a narrow view of human sexuality. Lots of non-heterosexual people have (obviously) decided that mainstream attraction isn't for them, and shag who they want.

And yes for some men, they want to shag big fat guys. They are called "Bears" and are a large niche within the gay community http://en.wikipedia.org/wiki/Bear_(gay_culture) You might see these bears at a gay pride parade. They are big, fat, hairy and proud of it. And they'll get laid that way.

Likewise there are straight men who like big girls, just search for BBW (Big Beautiful Woman) in you favorite porno site.

So your "pretty soft femme girls and butche men" theory is nice. Shame reality disagrees.

[Shenglong]

Can we look at general themes, rather than exceptions? I'm well aware that exceptions exist, but it's impossible to analyze situations like this that way. There are men and women who are attracted to animals as well, but obviously, these are outside the scope of this discussion.

[rmc]

How general do you want to be? You included gay men, which is ~ 2→5% of the population, so you're already siding on the "include lots of minorities" stand.

My point is that you can't really "analyze the situation" at all, because there are so many different sexualities.