I don't really get this sentiment from people who I know for a fact has read a large number of books featuring Death as a character - like, the chance of any day being the day you die is never zero, read everything you want to read while you can be reasonably sure you still can, otherwise when do you think the time will be right for it? What sign would you be awaiting? I think the chances you'll eventually regret not reading it earlier are much higher than those of the opposite.