Not worried about my own. something fast would be good when the time comes. Like my brother's friends out on a road trip having fun. head on. the end. They were 60ish and starting to have health problems so not really tragic like it would be for a kid or young family.
It might be a combination but what with air and water pollution and piles of garbage we might not want to be here any more anyway. I've wondered which one of these would be the real last straw that kills us all.