There's a church I pass every morning, always has some little homily on the readerboard about faith. Because I'm reading a book that deals with "faith healing" and alternative medicine, I started thinking about the parallels between religious faith and alternative medicine.
The saying about alternative medicine is, "It's medicine that's proven not to work. If it worked, it wouldn't be alternative".
With faith, people don't say they have faith about things that are tangible and proven to exist. You don't say you have "faith in gravity" or "faith in steel." Faith is when you believe something without proof, or even something that is proven NOT to exist.
Therefore, religious faith is snake oil philosophy. It's placebo reality. It's quack empiricism.