For anyone interested in the reasons why JW's feel this way, I'd recommend going to the source:
http://www.jw.org/en/jehovahs-witnesses/faq/jehovahs-witnesses-why-no-blood-transfusions/
Abstaining from blood is one of the oldest commands given in the bible. It pre-dated the Mosaic Law, as it was given directly to Noah. It was re-instituted in the Law and despite the Christian congregation freeing the Christians of many of the laws of the Israelites, the command to abstain from blood was not one of them, as Paul showed it was still in effect. Tertullian also had a number of interesting comments about blood that show the attitude Christians had way back then. Obviously these laws were not discussing blood transfusions, but JW's feel the commands stand.
The point in the above is only to show that there is a reason behind it. JW's have extremely strong convictions. Many died in German concentration camps, when they were one of the few groups who could have actually left the camps anytime they wanted, by simply renouncing their faith. Many of you think the bible is a book of fairytales, so you obviously won't accept those reasons. But love for God causes JW's to try and be obedient to their beliefs, even if it means a death that comes a little earlier than it possibly would otherwise. As an aside, death due to this is not a common thing. Doctors are often very careful in surgeries with JW's. I had a close friend who entered a "bloody surgery" and took a lot of heat from doctors for her beliefs. She lost a tiny amount of blood due to their extreme caution.
JW's are certainly not the only people to die for their beliefs. But since I know of no other religion or people that abstain from blood transfusions, it's so different and "out there" that it's not understood very well. People send their kids off to war, and many of them "die for their country" as well as kill many others. (JW's worldwide do not fight in any wars) Parents that lose a kid in war likely have a strange sense of pride and sorrow. I'm sure any JW's who have lost children strictly due to the fact that they didn't receive blood (I don't know any but they do exist), feel similar feelings. Dying stinks for everyone and throughout history people have died standing up for what they believe in. JW's believe in God and the bible and have no problem dying for those beliefs.
Anyway, I only posted this because I felt that some level of defense was needed. I understand if you don't agree, but at least maybe some of you will understand.