That is just the thing though. A guy can go out squirting his hose where ever he wishes and if he keeps moving no one will ever know. A woman on the other hand, well once her fields are tilled and seed has sprouted it's not so easy to hide, and taking care of it can cause long term damage (rare but possible). This is the only reason the double standard ever arose and therefore is the only reason the double standard still exists.
'People are never perfect but love can be. People waste time looking for the perfect lover rather than creating the perfect love' - Princess Leigh-Cheri from Still Life With Woodpecker.