Or if the people who want life so badly could give away some of their will to live to those who are suicidal?
Good idea, except most of the "suicidal" just want attention and would be "scared to death" in their self-centered fear of really dying. While in the military (in a barracks on our way overseas) I saw a guy 'slightly' cut his wrist (in the bathroom with a razor blade not to deep, horizontally) and I tossed him down wrapped up his wrist. As we waited for a medic, I said next time cut your wrist vertically and deeper so you'll bleed out if you really want to die chicken-****.
He didn't want to die, he wanted to find away to get discharged. And if someone wants to commit suicide they usually succeed.
I suspect that would soon produce a market in life expectancy which I am sure some would applaud as a good thing.
I was thinking more of selling a few years of one's life to someone else.