It's human nature to focus on things that are going wrong or hurt us. A person could receive 9 positive reviews plus 1 negative one and they will spend more time reading and re-reading the negative review. The same thing happens with school exams where a person gets 9 out of 10 answers correct and they're upset because they did not get a "perfect score". We hate our imperfections.
With age and experience comes the wisdom of knowing not everyone is going to like you or agree with you on everything.