Say a stranger approach you with a deal - exchange the last 18 years of your life with a blank check that you can cash for any amount of money you want. The trick is that you won't know how long you can live and for all you know once you signed the deal, you could drop dead on the spot. Or if you were destined to live til your 90 you still got plenty of years to live with the money. Walk away from this deal now and you will never see the stranger again.
What will you do? There is no definite answer. I'd just like to know how you will handle it. With all due respect to religions that are against soul-selling, this is nothing of the sort and I am not going to offer you a deal such as this either. It's just a question of what-if. Awaiting all your answers.
Every single episode of the twilight zone was based on this premise that you cant have anything without having to pay the ultimate price, and the price was never worth it.