If you humiliate and discriminate others, I'm here to tell you I know your little secret: you think you're worthless, and you know you're too lazy to do anything about it.
Because, you see, if you really want to become a better person, you have to work for it. Go work out, read a book, learn a skill, take care of your health, anything... It all requires an effort.
But you don't have the guts to actually work on yourself and to become better. Instead, you take a lame, lazy shortcut – you try to feel superior by making others feel inferior.
But you know what? It only gets this far: it only makes you feel better about yourself. You're still the same hateful asshole.