Would you kill those who wish to destroy your way of life? The US government enlistment went up tenfold after the 9/11 attacks. While not on the scale of that matter, the Jedi Order, in Anakin's eyes attempted to take over the Senate and the Republic, and then tried to kill the Chancellor, something against the Jedi Code. At that point, the Jedi Order of which he knew and trained to be a part of was no more and they were all traitors. They excluded him from everything, so why not this plot? He had no trust in them. Once he started down the path of the Dark Side, killing children only made him stronger. He had slaughtered children before in the Sandpeople, why not again?

Luke came so close to turning to the Dark Side and what was the GIANT momentous occasion that would have brought that upon? He was going to kill the Emperor in cold blood and kill his father because he threatened his sister. Anakin went to the Dark Side because the Jedi attempted to kill his 'father figure' in cold blood and in his mind, were holding back knowledge that would allow him to save his wife.