And Mewtwo's angst is contrived. Also apparently it's okay to kill your creators who wish to know you more but spare the evil guy who wants to control you.
On the one hand, Mewtwo wasn't playing with a full deck when he killed his creators. On the other, it was extremely stupid for Mewtwo - not to mention Ash and his friends - to not even consider teleporting Team Rocket to the nearest jail at the end of Mewtwo Returns.
And yeah, Mewtwo's angst is kind of annoying. At least the English version of the first film had him acting a bit less like Shadow The Hedgehog and a bit more like a James Bond villain.
"This is the strangest life I've ever known" - Jim Morrison