Don't you feel annoyed when people lecture you about what you should do? At least I do. When it comes to idea and principal, I got very touchy when someone told me that I should do certain things.
Who are they to tell me what I should or should not do? I do something because I want to do it, not because people around me think that I should do it. Life is complicated enough, and I don't think anybody needs to guide people around or to constraint oneself to others' perception of life.
But then, after all has been said and done, I realize how arrogant I was in rejecting the arrogance of others? Who gave me the rights to be self-righteous in thinking that others do not have the right to lecture me?
Often, in fighting one's enemy, one has become the enemy itself.