There should be a service where you can sign up: so that in the last 10 years of your life expectancy they come to kill you in climactic and creative ways.
So one day, your weary old bones are sitting on a terrace, drinking some ice tea. Then suddenly a knight on horseback appears. He unsheathes his swords and swiftly beheads you.
Imagine your grandchildren on the playground the day after. "Dude, dude, dude! You'll never guess what happened to my grampa!"
The Twilight Zone episode The Obsolete Man had that hook in the story line.
Later on confirmed by ethnographic readings that the practice was widespread 
