(Quote) Soylent Green? Wafer anyone? (Unquote)
Very perceptive, Thorns.
Or maybe ...
Old people could be persuaded to sayonara out on the ice flow, but ... so much global warning that there aren't enough ice flows.
Final station at Drivers Exam could be happy pill for those who fail a revised tougher physical, but ... so many old people in the world have never had a car.
Leaving ... Death by Clog! Confine old people to boring location where exercise is forbidden and all they can do is eat -- and nothing but beer, booze, soft drinks, candy, chips, pizza, super burgers, shakes, and banana splits.
Takes a little longer, but tastier than a green wafer ....