The Daily Grind: How much grouping should be required in a game?

A good group arguably makes any game more fun. No matter how much fun you're having in any game, be it Star Wars: The Old Republic or Global Agenda or whatever else, there are players who believe it's better when you're running with other people, telling jokes or roleplaying or even just working in unison. Of course, others would point out that's all if you have a good group. A bad group can turn even something fun into a real misery, which sort of defeats the purpose of playing a game. And that's not getting into the time it takes to form a group or coordinate several people... or the fact th