Posted: Jan 18, 2011 2:00 am
The problem is you are trying to draw a line from one to the other through logic. Faith is delusional not logical and does not require explanation. One can derive emotional strength from delusion probably much easier than through logic, which is why humans have a tendency towards it in the first place.
I'm sure it can and probably has been explored scientifically and shown that it produces some dopamine somewhere in the brain that makes you feel better.