Oh, I try. But in the case of organ donation, I simply fail to understand the reasoning. If you're dead, why not save a life, renew sight, or otherwise greatly improve the life of another? Are there people who think that organ donation would hurt them in an afterlife? We, at least in the first world, live in societies with freedom of conscience and belief, so people should at least think through the consequences of their choices on others. (And on themselves; if there's an afterlife, do you really want to risk being judged on the basis of having chosen to deny a chance at health and wellbeing to another person?)