Why does everybody hate the idea of multiplayer in TS5?

By multiplayer, I mean having the ability to play with your friends. I don’t think having online servers open to all players is a good idea. It simply wouldn’t work as not everybody would follow the rules. Ideally, you’d have an invite code that you could simply send to your friend, thus allowing them to join your world—this sounds like the easiest way. Oh, and this argument of “older people playing with younger people”/“romance would need to be removed from the game” is absurd.