I'll usually skip convos I've already seen, but if I've never seen it before, I'm watching it - yell all you like. Everyone says that, if you want to watch convos, you should join a guild. Well you know what? Join a guild if you DON'T want to watch them.
Well said man. I'm the same way. For class quests and other quests I haven't seen before I rarely, if at all, hit spacebar. If it's anything else, I spacebar through the convo.