This is where I feel Reason comes in. While emotions are important, facts are always more important. Judging people is good if it's to further your own self interest otherwise it's a complete waste of mental energy. "Judging others" is a fact of life and has to be done, what shouldn't be done is doing it unnecessarily, especially when other people have no affect on your life. For example judging people over sexual/religious choice reasons is most often a waste of energy and shows your own unfair biases and character failures and just a projection of lack of self-esteem.