It only makes sense to save your sanity. Any person in the medical field for example will tell you you HAVE to desensitize yourself to survive. If you constantly wear your emotions on your sleeve you aren't going to make it. I see this girl on Facebook who makes long winded posts about shootings, injustice what have you and she seems absolutely miserable. They want to believe that one day there will be a world where nobody is judged by skin color, sexual orientation, religion ETC and everybody can live in peace. Sadly that is fairy tale bullshit pardon the phrase. Human nature could never let a world like that happen.