Without love the hate wouldnt exist
and otherwise
i agree.When you hate, you will fight the whole world alone.
When you <3, you will have many friends fighting by your side
this matters was already proven by vegeta from DBZi agree.
also, when you fight for others you can do greater things than when you fight for shallow reasons, although hate is a potent driving force. look at naruto vs gaara, naruto fought to protect his friends, gaara although he was more powerful, fought only for himself. sasuke is doing the same right now, he's validating his existence by taking revenge on konoha. and once that motive is gone, he'll have nothing left.