I think its ingrained our nature to be judgmental, as well an asset to our survival to be capable of making intelligent judgments. I would suggest that someone who doesn't make any judgments isn't doing much thinking. Many issues arise, IMO, when people expose or impose their uninvited judgments onto others. We should steer away from allowing ourselves to be controlled by the views of other people, but thoughtful constructive criticism, call it coaching, can be invaluable at times.
To the second question, I'd say practicing polite discretion in communicating our judgments would be far more reasonable than denying our nature and our need to render judgment.