The only thing I would look forward to would be building spaceships and traveling to other planets after a couple thousand years. If that would not be possible, I would go insane after 100 million years, living in the same house, looking at the same wife,blahblahblah. The same goes for the concept of heaven, living forever to do what? just praise god minute in and minute out. And having 23 virgins....what the hell am I gonna do on hour 24?