I believe the Jedi Order in SW:TOR is a seriously stiff arsed and annoying interpretation. That should not keep the player from playing their characters their own way of course.
This. I think TOR decided to go with a very annoying interpretation, because they said "If we make the Sith all about Passion, we can have Jedi's be the total opposite"
And the Jedi order isn't against emotion. It teaches controlling them, thus the rules they have, because a force user who can't control their emotions is a dangerous individual. More dangerous than a pissed off smuggler/bounty hunter with a blaster.
Of course that's a little hard to convey in a game where they want to make every player equal. It's the difference between the Star Wars storyline and making Star Wars a game.