Imagine the situation. (Apologies if any of you have been close to this situation previously).
Someone you love is very ill. For the thread's sake we won't be specific, but we'll take it as an illness that can be somewhat reversed with the help of an organ transplant.
Depending on how much you love the person, would you sacrifice your own health in order to help them? Taking this to the extreme - would you sacrifice your own life in order to save them?
This is a scary thought for myself, as i've stated previously in other posts i don't really believe in God et al, and consequently i don't believe in the afterlife. This means that to me, this is the only life i will ever have, and it is precious to me.
Personally, i could donate an organ only for family i really love (parents, siblings, grandparents etc) , and a select few friends i regard as close to me as a brother or a sister. This would result in less than perfect health for myself, but it would be worth it so that the person i love could live a more normal life.
I think i could only make the ultimate sacrifice for my sister, or the children i plan to have in the future. I'd be the first to admit it wouldn't be easy though, even for someone as close to me as that (see above about this being the only life i'll get to enjoy). I love my parents and grandparents as much as i love my sister, but i don't think they would let me do it, as they have lived a much longer life than myself. I think this would also figure into my decision if i had to make it.
And to wander off slightly, although i could never be certain until i was in the situation myself, i think this all changes when it is a "spur of the moment" thing such as a fire, or when someone is drowning. I think you could risk your life without much thought if someone you knew and loved was in immediate danger.
This has been an attempt to make a serious thread. You may not like it, but if this is the case, just ignore it please.