And gays want this this to be equated with normal heterosexual sex the way nature or God (take your pick) intended. Both God and if nature is your god agree on this point.
A sewer whose structure is designed specifically for one way traffic. The other way brings wonderful things like prolapse, collapse, tearing, ruptures...I won’t go on.
That’s the part I never understood one bit, why not do some other behavior that avoids the body’s actual waste disposal system? Surely at least some could be smart enough to act out their attraction in other ways?