Suppose you could be alive on the same planet as all the most interesting and intriguing people who ever lived (along with all the others who, though less interesting, took up space, ate, fornicated, fought wars to suit the interests of others and generally made nuisances of themselves)?
It's a great concept and Jose Farmer managed to carry the fantasy to amazing extremes through this series of books. The wars of the final future of humanity, the dreams and aspirations, the mysteries and the ennui involve all the humans who ever lived, plus an alien or two and some others. Every intelligent being, I might have said, ever to die on the face of the planet earth, all at once.
Any world where John Longshanks, Sir Richard Burton, Mark Twain, Jesus, Hermann Goering and everyone else is striving, competing and following the agendas and personality traits of their life on Planet Earth is bound to be worth a read, and this one is.
Go for it, lean back and allow yourself to imagine the afterlife in a way you'd never dreamed of it being.