Except that animals don't have just the desire for sex with fertile partners. If they did, dogs wouldn't try to hump your leg.
--- Charles Brown <charlesb at cncl.ci.detroit.mi.us> wrote:
> ^^^^^
> CB: I'm saying that for some, many, it is both an
> urge and cultural.
> Both. Note I say "some". I would guess it is the
> majority because the
> instinct for having fertile sex is likely to be
> selected for, because
> fertile sex is so fundamental to reproducing a
> species, to species
> perpetuation. This is biology a, b, c.