(SPOILERS) Dexter isn't "evil." He's a person suffering from multiple untreated mental and emotional illnesses that manifest themselves, in part, as overwhelming urges to kill other people. read more
Dexter has no concept of good and evil. One must remember that Dexter kills evil people, not because of his own choosing, but because of the code drilled into him by his adopted father Harry(who probably did this to save Dexter from any future guilt, if he recovers.) The reversal of Biblical themes is very interesting here. read more
dexter is definitely not evil!! An evil person wouldn't have been able to love the way he loved and cared for Rita, her kids and his sister Deb!! He does horrible things, never denys his monstrous side, but he has a heart, soul and morals and he tries his best to protect his family along with innocent people. read more