As far as I'm concerned, a young person dying peacefully in their sleep is more tragic than an elderly person dying slowly and painfully. The math on this one seems pretty straight forward to me, but I appreciate that some people may find attitude cold or cynical. Most people probably wouldn't be willing to throw that proverbial trolley switch, but I would without hesitation.
Without going too far down the moral philosophy hole, I think we can both agree that there's pros and cons to either side of this one, and just part on good terms. This is classic "maximizing joy" vs "minimizing suffering" axis stuff.
