You have to live as if you have free will, as if life has meaning, as if you can do something to make the world a better place. The belief that free will is an illusion makes it harder to kick a bad habit. It makes it harder to do anything.
You have to live as if humankind will not perish in a nuclear war or because climate change will make this planet inhabitable.
You don't have to live as if there is a God somewhere who cares about you, but this belief can help you to endure and weather the storm.
The more you understand how the world really works, the more depressed you become. That's the reason why superstition, escapism, and delusions are helpful, and that's the reason why they have evolved and why they are ubiquitous.
