Some would call it Sin, what the devil is said to incite in people, but then that is just self inflicted nonsense. We basically often think in good and bad, and most of us believe in Karma. Those who don't will of course have absolutely no scrupules about doing things that are considered not done, but let's face it: none of us are absolute Angels or Devils. In the end, we are all a mix of preferences, and we should all leave others to enjoy their own preferences, as long as they don't hurt others. Best advice is probably the old Wiccan wisdom: "An it harm none, do what you will."