Oh I'm totally in favor of pushing fat granny in front of the trolley. Take the utilitarian approach! But it does kill younger people in lesser numbers, and potentially permanent damage to be people's brains, cardiovascular systems. What about them?
As an aside, my fat granny is watching my kids right now so she's not totally useless.
Started as just a few weeks and became over a year and who know if next year will be back to normal...