“No motive is pure. No one is good or bad-but a hearty mix of both. And sometimes life actually gives to you by taking away.” - Carrie Fisher -- RecklessPrudence
He only wanted to do good. To improve things for everyone. To make the world a better place. There were just a few things that he needed to make sure of. For the good of everyone. Well. Almost everyone. There were some... bad elements... that needed dealing with.
The drains on society, of course. Those without any plausible avenue to making the world better. Those who took without giving. And those who made too much noise about the way things needed to be done. Those who put the brakes on the wheels of progress. Useless people.
They needed everyone to work for a better world. And if they would not or could not work, then they did not deserve the world everyone else made. Getting rid of them by any means necessary just made sense. It was the greater good.