This feels like the argument about weather the self-driving car should hit two grandmas or the guy in the car. The discussion is not productive, because the ans

This feels like the argument about weather the self-driving car should hit two grandmas or the guy in the car. The discussion is not productive, because the answer that saves the most people is to get self-driving cars on the streets as soon as possible. As for the answer to your question, just go for best wellbeing for the individual. Happier, healthier, less obese, fitter, non-smoking people are also a net benefit to society. Assuming the technology works at all.