Here's a few synonyms for hateful:
Bitter, odious, spiteful, heinous, vicious, repulsive...etc...
Do you need anymore clues as to why hate is a bad idea?
Have you ever met one of the haters you hate? Been attacked by them? Directly threatened by them?
And before you say yes to the last one, don't (no doubt you'll suggest if we don't stop them they will be in a position too) the only way that can happen is your “hating the hater” meet spite with spite you get vicious, meet vicious with vicious you get heinous (see where I'm going with this?).
That's the last arrow in my quiver, damn tar your armour's strong.