How will you die?
Seriously. Given any thought to how you're going to die?
Most of us are probably going to live for ever, of course. For the rest of you, are you going to make a fight of it and only go out after hitting the leading edge of medical science and engineering or will you just be asking for as much morphine as the NHS can afford and go quietly?
And then there's the afterlife to consider: eternity, let's face it, is a heck of a long time…