On one hand, one of the most annoying aspects about playing WoW is every Tuesday, the servers go down for maintenance. Down times can vary from a restart, which usually lasts about 15 minutes, or full maintenance, i.e preparing for an upcoming patch. Duration on those days can vary from 6-8 hours. While I understand completely how obnoxious it is to rely on server status, I'm hoping D3 doesn't follow suit. On the other hand, I imagine it makes Blizzard's job a lot easier when providing new content, like patches and updates. The argument lies in a players taste, whether they prefer to play alone or with friends. Personally, I don't envision myself playing D3 alone, very often, so it works for me.