I can't say about your logic, I'm so dumfounded over your poor choice in analogies. Um, could you put in language less lurid?
normal males prefer nice, fresh, good looking females; perverted males prefer their fellow-males, but their perversity stops here.
There is nothing to presume that they would like to have older, worse looking, worn out pooftas for their pleasures, not young and fresh boys.
And to realise this, you don't need a global research effort by statisticians and politically correct sociologists, do you?