Karma... that word, the one word that nearly, nearly everyone uses when they are angry or upset, "Don't worry Karma will get you!" or "Karma hits like a bitch!" Yet after everything that I've experienced in my life 'karma' has never appeared to have my back, so I'm less inclined to believe in it.
Unless I personally or physically see karma strike back at someone for all the pain, hurt, emotions, stress, anxiety, depression, bullying etc I've been put through I won't believe it any time soon