I think you are right. I know that I would never go give blood because frankly, I was afraid it would hurt. But I have always been aware of the need. I've worked with cancer patients and in ERs where the blood and blood products were the difference between life and death. On September 11th, when I saw all those people flocking to give, I was ashamed of myself. My husband gives every other month. I am resolved to do the same thing.
(ps: It didn't even hurt a little!)