What's the difference between hiring someone in the hobby or hiring someone who goes out to singles bars a couple times a week and picks up someone for a random fuck? The guy who cruises bars probably spends at least as much money if not more than the guy who just saves time and calls for takeout. I won't even bother with the morality question of married vs single hobbiests. Every one has different moral beliefs and some men hobby with the approval of their SOs. It wouldn't surprise me if some marriages have actually been saved by the hobby. Where I think a problem could arise is if someone is truly addicted to the hobby and it begins to affect his everyday life. But this could become a problem with any kind of addiction whether it be to the hobby, drugs, gambling, or anything else.