I will now subtract intelligence points from your account. Eradicating weakness is not pure evil. People do this everyday, especially within themselves. What made Hitler, as you say 'evil,' was the way he went about doing it. I will also say that 'evil' is a relative term, ones evil may be another's pleasure and vice versa. I could say you are a satanic evil bastard for watching game of thrones, but that doesn't mean anything. Much like beauty, evil is in the eye of the beholder.