Why does everybody hate the idea of multiplayer in TS5?

i think it might be different if we can control if we invite someone in or not..but I have had an experience with online and it is great for the most part ..but there is always folks who are more than a little troubled ..so if by online it is a world were everyone can go then it would not be something i would be interested in....even in the forums here on occasion you get sad comments left by folks that do it for attention/shock value or just because they can...it is nothing anyone needs in your relax time.