Some, like myself, have not "lost faith in the Bible," but have grown beyond faith in the Bible.
I think that belief that the Bible "gives us the best answers to crucial matters" is ignoring it's answers as far as women, slavery, exclusionism, etc.
If a man rapes a woman, pay 50 sheckels to her father and marry her.
The husband is to rule over his wife. Man was not created for woman but woman for man.
A man who refuses to impregnate his widowed sister-in-law is put to death.
I could go on and on.
If we followed the letter of the Bible, then we really would be closer to your "walking zombies in a manner of speaking."
You could sell your daughter into permanent slavery to pay a debt.
You could beat your slave severely, as long as he doesn't die that very day, but the next day is okay.
If you can't find a wife, you could take the virgin daughter of your enemy in battle that you just killed and shave her head and imprison her for life, but call her your wife.
Is there any other book that gives us a better understanding of where we came from , and what may be / is to be our future .
I won't bother with that except to say that man is much older than 6 or 7 thousand years old and that real progress with our future comes from excepting real science about how it all started. Otherwise, we could remain ignorant and not bother to understand our universe because "God" will tell us what we need. So don't bother to cure disease or invent better products for mankind.