I'm also smitten with the idea of time travel - even wrote some short stories about a German soldier, WWII era, who comes up with a time machine and goes back to save people without violating the grandparent paradox. Only people whose bodies wouldn't have been found get saved and he delivers them to a future place for safekeeping. Ten years later, I still haven't pulled it into a novel or novella. And Christoph Waltz is getting too old to play him in the movie version :) .

If there is a heaven, it comes with a bonus: time travel! My husband at age four gets to play trains with our son at age four. Our children get to see their grandparents as young people. And, always, the Sunday dinners include all of us, and we are all young and healthy, and the food is good!

Others might prefer speeding through the universe, exploring new worlds. That will happen, too. But revisiting the past is as necessary to my "Reward in Heaven" (!) as visiting stellar nurseries ("A star is born!") - Hubble telescope photos - that's where we wannabe! (And back home with our beloved cats and dogs, too, if only for an hour.)

Maybe you and I will recognize each other in a parallel universe. :)