It's human nature to want more.
Rant: Not everyone is an isolation-loving codemonkey. Some people need the feelings of team involvement, urgency and repercussions. If I'm just left to sit in the corner all day, and no one knows what I'm doing, and no one gives a shit if I do nothing... guess what? I'm going to end up doing nothing. Perhaps people like me are flawed, but we're still very talented and capable -- and not every company can afford to pass over the extroverted developers.