I'm telling you, soylent green may not have been as much of a dystopian future fantasy as we might like to think.
 
Recently read in the Atlantic the 58 year old man whose name I've forgotten an essay on why he doesn't want to live longer than 75 - or, put another way, sees no reason to prolong life much beyond that.  The obvious response is to say "we'll check in with you on that at age 74...".  Lol. 

Ed - link to article above http://www.theatlantic.com/features/archive/2014/09/why-i-hope-to-die-at-75/379329/