I couldn't imagine not having some sort of personal relationship with the people I roleplay with. As it was mentioned by Lazio, it can be VERY awkward if people just have a business-like approach to it. I just can't see how it can be fun being so impersonal while doing something like this for a hobby, you know? It would be like being on a sports team and not having any of the comradery or friendships that come out of that.