I went through over a decade of severe depression. When I was depressed, I was the biggest hater. I hated on everything, happy people, happy relationships, people who had a purpose. I thought that my hatred was a reflection of the state of the world, but it was actually a reflection of the state of my own heart. It's made me realize that when we hate on others, it is actually a sign of a very sick soul. A happy soul can't help but love. If you're spending your time hating on others, it's very likely the person you really hate is yourself.