Why shouldn't I forcefully impose my opinion on another human being? What is exactly wrong with that? Why can't I kill anyone who doesn't agree with Materialism, for example? Religion is a waste of time for the ultimate goal, they shouldn't be debated, they should be eliminated.
I'm being serious, the human species is going to be extinguished, and we will be doomed if we let these idealist scum take over. Human beings can be remade, we don't have to feel guilty by killing idealist and religious scum, we can make another human beings, just as useful, and with the right mentality for our success.