The only time I've ever been mad was probably when the Team Rocket killed a mother Marowak after torturing it and left the baby to fend for itself and thought nothing of it! That is really messed up! Don't tell me Team Magma or Team Aqua did something like that.
See, Team Rocket was the only one ever really evil that I thought mostly. Team Magma and Team Aqua were just kind of lame. I saw them and was like. " Hey buddy, you just fly in on a Fearow from Stupid Town?" HAHA Spongebob reference!
As for Team Galactic, all I thought was that Cyrus was a little pokemon short of a team, if you get what I'm saying.
Almost all the other evil teams, I either thought, "Okay, whatever", or I just haven't really played that game. Like I never really got to play Pokemon Colloseum too much, and I don't think I've even played Pokemon XD.