“People usually ‘sneak off’ to the bathroom in order to have a dump as well, there is nothing morally wrong with it, its just that kind of thing is best done behind closed doors...”
Ok, then why do people who masturbate in public have to register for life, while people who take a dump in public only have to pay a fine?
I’m pretty sure having sex with your wife in public would also get you in serious trouble. In any case, since when has the law been the ultimate arbiter of what is morally right or wrong?