a. Because they may be a deal more powerful than you. If they find out the extent of your animosity, they may call in an associate and have you turned off.
b. They may not be 100% hateful. They may do a certain amount of good – and if you hate this good, you will be as hateful as they.
c. Because you may not have been told the entire story – see (b.) above. Or you may have been told frightful lies by other people with other axes to grind. You may be a dupe or a dope.
d. Because the sun rises in the east and sets in the west every 24 hours. Tomorrow things may change and the person you hate may do admirable things. Stake your virtue claim too early and you could be on the other side of the fence.
e. Because hating lessens you…not the object of your hate. They rarely even perceive your angst. And it takes a lot of time and energy that you could devote to fun stuff.
f. Because you can occasionally appear ridiculous in your anger. It’s all sturm und drang to start with but as soon as people start to laugh at you the wind changes. You rarely regain the upper hand.
g. Because you call increased attention to your own behaviour…and this is rarely a good thing.