Why is it that heterosexual males have such an interest in penises?

[RenCutypoison]

Mr Puggsly said:

theprof00 said:
Fetish should not be confused with gay. There's a clear difference, and I think you're being very disrespectful to categorize gay people in such a way.

But the fetish is gay. Fundimentally we're talking about a man turned on by male genitalia.

Transexual are not gays, at least not always. Doesnt prevent them to want to see porn with trans' in it.