I love art. Contemporary art is a bunch of ugly wankery by pretentious people who are bored of actual beauty and can only amuse themselves by creating ugly stuff, then claiming "you just don't get it". The world would be a significantly better place without contemporary art in it.
If there is any change I could make to the human personality at large it would be the reflexive opinion that anything you don't understand, or even dislike, is automatically morally wrong.