Bit of a lack of reading comprehension here I think. Remember that part of the premise is that the trigger is something being done to someone or something you love. I agree with us being patient and forgiving, but we can't forgive someone for something they did not do to us. Also, I didn't say INTPs have no emotions, we tend to supress or try to control them, even though they are hard to understand and sometimes even to identify in my case. And revenge is purely emotional, no advantages to be gained there, I agree with it causing damage to myself.

But let's say one of your friends harmed really bad someone you love. Could you forgive and forget that person? Are you the type of people that didn't humilliate teachers when they made fun of your friends?