I'm sure you've heard this old folk story about a man, his son and their donkey:
http://www.pitt.edu/~dash/type1215.html#aesop

That timeless story does a great job of illustrating why it's pointless to change one's behaviour because of criticism from people who are not invested in your purposes and reasoning.

Personal choice and individual goals don't tend to result in "one size fits all" behaviour, yet people tend to judge as though their own choices and reasoning are the standard by which the world should be judged. Buying into that logic only encourages more of the same.