Well, if you have to stay up at night, at least you can scratch worrying about the decline of my body in old age off your to-do list.

I'm not worrying (trying at least), but I do wonder whether I have born late enough that medical science will progress in time to give me several healthy decades more, of course a lot of it I can affect with my own actions too. I dare not to count on immortality though, at least not yet, but I do wonder about the existential consequences that it would cause. So many interesting things - some frightening too - coming in the future, like this blockchain thing we have going on here :D