Remember that homosexual acts really are choosing sexual gratification over otherwise productive endeavours.
So is choosing {protected} sex, so at least there is some 'consistency' for those that want to ban all conception blocking methods and abortificants.
But even with {unprotected} sex the
intent is very often sexual gratification intentionally
without production -- hence the "rhythm method" promoted by the catholic church.
Assuming the average newly married couple has sex once a day (low, imh(ysa)o) and they can only have one (two if twins) child, AND it usually takes 2 to 3 months to get pregnant when it IS intended, this means a ratio of 1/75 of sex (SPOOYA - just to get a number out there) is really "productive" even with
intent to be productive. And this doesn't include sex after {pregnant} has been achieved.
The question for fundamentalists is why {sexual gratification} exists.
Enjoy.