I despise the 'holier than thou' attitude.

Well, that attitude is pretty hard to take. It speaks of ignorance and emotional/social immaturity. But will I allow it to undermine my relationships or happiness or health or peace of mind? Nah, not any more...it's easier to practice mental vigilance and self-discipline, so that my own negative, hateful, harmful thought-patterns, judgements and emotions may be replaced by patience, tolerance, understanding and compassion asap.