He claims what he is proposing is "less morally questionable" yet in the very next line he states he wants something "truly horrible" and "evil itself." 
He claims what he is proposing is "less morally questionable" yet in the very next line he states he wants something "truly horrible" and "evil itself."
He is the Main Character and therefore anything he craves and wants more of can't be a bad thing because he can't be a bad person.