I say both of them. Hate and love are complementary opposite. It's like in the colour spectrum, red and green, orange and blue...perfect opposite that goes together. Love can make you scream your throat raw, with pain, with joy, with bliss. Love can make you cry for the same reasons. Love can change you, turn you for the worse or the best. Same with hate. Now it all depend on how one feel those emotions...I myself would never indulge in the extreme, it's to lose control and it's destructive.

But remember it's all subjective.