In K1 and K2 (moreso K1 than K2), they always blab on about how emotions can lead you to the dark side, and when they talk about emotions, it almost, err... I mean, ALWAYS happens to be about anger! Do they think anger is the only emotion out there? How about happiness? Can happiness lead to the dark side? How about love?
Y'know I actually thought that Bastila's going to the dark side was one of those "doing the wrong things for the right reasons" kinda things. Now she could properly express her emotions, whatever they may be. Zez-Kai Ell was right. The Order was flawed at that time. The Jedi should have been allowed to have emotions, but at the same time, keep a clear head about things and not necessarily act on impulse. Heck, by their teachings, a droid would have made the best Jedi