Unfortunately I can't quit Facebook because it's the only way to know people from the other sex. I tried Tinder for a couple of months and it didn't work for me. My assumption is that people feel safer to interact with you if you have friends in common. That's said, I don't use Facebook that often, if I start talking with someone and we enjoy each other company, I kindly ask if we can use WhatsApp and if so, I will stop using Facebook for a period of time.