I'd like to die so that another may live.
Once dead, I'd prefer that I didn't go to waste. I have organs that others may find useful. And is it weird that I've frequently imagined my naked corpse dumped on the side of the road so that turkey vultures or other scavengers could put it to good use? It's taken lots of time and energy to get this delicious, and the thought that I'll just be burnt up or thrown in the ground to rot away seems like such a waste....
Tibetan sky burial?
Saving someone else, like getting hit by a car after shoving them out of harms way of something. Y'know, something useful.