I question the whole "life is in the blood" thing that the Bible purports.
What does that really mean? Is it some supernatural property of blood, or does it simply mean that without blood, the organism dies?
My take on it while being an active witness, was that Jehovah wanted what's best for his people, and knew that eating blood could lead to sickness, especially at that time in history. But being a bit 'superstitious' as you also are when you're a JW, I guess I also thought perhaps there was something supernatural about blood. So what does the Bible actually say?
"Only be sure that you do not eat the blood, for the blood is the life; you may not eat the life with the meat." Deuteronomy 12:23 (NKJV) [highlighted by me]
-Now I searched this verse, and most translations agree that "the blood is the life". Doesn't this, especially in conjunction with "you may not eat the life with the meat", show that the author meant that there is a supernatural component here? How else could you eat the blood with the life when the animal is dead?
Now, as a JW, I would've said that this shows that we have no right to eat blood simply because it actually contains the life force of a creature. But as a rational, modern human being, I smell a rat.
Why is the life of a creature in it's blood? Well - to people living in biblical times, it's pretty obvious; someone gets hurt, their blood squirts out and they die. From the look of things, there's a direct correlation between blood and life. And that's true in some sense - you can't live without blood in your body. However - can you live without kidneys? Can you live without a liver? Are these organs less important to sustain your (or an animal's) life than blood? And yet, JWs and anyone else have no problems with eating these vital organs (from animals obviously...). Or for that matter have an organ transplant.
My point is - I think the ban on eating blood was partly due to superstition in biblical times, and partly to avoid illnesses that you won't get with a well bled animal. Of course - I say this with the world view of an atheist. But, having said that, I don't think it's logical that 'life' as in some supernatural entity is in the blood, not even if you believe in God.
Weirdly, the sanctity of blood (life) is pretty much not mentioned anymore when JWs argue against blood transfusions. If you go to the official Watchtower site and read the blood article there, it's pretty much all about demonising blood from a medical point of view - how incredibly dangerous blood transfusions are, and how rare blood is so that there are blood shortages (well, you could have helped that out, you know...).
Anyway... Even though I believe the above, I have to agree with Gopher in that this is one of those indoctrinations that is the hardest to shake. I would never for instance eat blood pudding or sausages containing a lot of blood, simply because I'd puke if I did. A blood transfusion to save my life though? I'll cross that bridge when I get to it, but I believe I would.