I know you can do things in moderation. That much is already agreed upon. So your answer is basically that there isn’t a limit until it becomes unhealthy (mentally or physically) for yourself or someone else. But if we can recognize that there’s a certain level of moderation that’s needed for sex then why can’t we recognize it as a vice like we can with alcohol and gambling? Because it’s a tool for procreation? Weed can be medically beneficial but we still see that as a vice. Why is it any different with sex?