Why do you hate some people or things?
That's because they are not meeting your expectation of them. You make expectation based on your conditioning, prejudice, projections, etc.
And when they don't meet your expectation, you blame them.
How selfish of you to demand someone else to live their life so it suits your taste, profit, pleasure and pride?!
When you find yourself complaining about someone, you're at fault. It's your selfish, hopeful expectation of them that made you disappointed, not them.
When you exchange your illusions for reality, your life becomes meaningful.
Awareness by Anthony de Mello
A young man came to complain that his girlfriend had let him down, that she had played false. What are you complaining about? Did you expect any better? Expect the worst, you’re dealing with selfish people. You’re the idiot—you glorified her, didn’t you? You thought she was a princess, you thought people were nice. They’re not!
Enlightenment! Enlightenment! Wake up. When you’re ready to exchange your illusions for reality, when you’re ready to exchange your dreams for facts, that’s the way you find it all. That’s where life finally becomes meaningful. Life becomes beautiful.