@Fido,
Fido, I know you've been following the philosophy threads, and two links were provided to explain about human irrationality and social interactions.
The majority of people believe in Satan and flying saucers, and within our social fabric, we have social intercourse with the same people who are irrational - including our doctors and politicians. We live in this irrational world trying to make sense of reality, but our environment is so screwed up, how are we expected to survive with our mental and physical health intact?
Most humans believe in one god or another, and believe they will be granted everlasting life if they live according to their religious laws. They go around making it miserable for gays, lesbians, and members of other religious beliefs. They even go and kill their "brethren" in the name of god.
We're doomed!