@thatguythere What you are describing definitely exists in gaming. The transitory nature which makes interaction past the point of 'well, we're playing right now' irrelevant, or even inefficient, is there; I join 5-man groups on WoW all the time, and I don't care who these other 4 people are. I look at their gear to make sure they can pull off the run, but they don't even have names to me; there's a DK tank. If I need to refer to him, that's how I do it: "Hey, tank, nice job!".
Yet in this hobby there are people I haven't played with in years I interact with regularly on MSB. Hell there are people who haven't played in years, period, but who might come back. What's even more important is they do - many of us, myself included, took years-long hiatus and returned, only to find they still had roots around and others remembered them.
That's how it is. In one game I don't even remember you while we're actually still playing, and in another you are a person to me, and I have memories of you.
Your reputation matters, too; that DK tank might be bad (I mean, he's a DK, come on) but it's not like if we group up the week after I'd recognize him. But here, look at our threads... we have long memories. Sometimes for the worse things we did but often for being cool, too. There are folks I'd play with in a second if our paths crossed again, and I'd make no secret of it when I introduced them to others.
I mean your perspective might differ, but I feel community isn't merely important, it's what's keeping me MU*ing.