Why euthanise them? That would be cruel and unfair... to those paying for it.
Get them working. Gardening, washing cars, whatever. Contributing to society.
This concept of a 20-year state-funded package holiday named Retirement wasn't ever a right until the last 50 years. Before that people were absolutely knackered at pension age and died soon after, or they'd put enough of their own money aside to take care of themselves. Or their families looked after them.
