What is any achievement, however great it was, once time itself is dead? - Iain Banks

The point is: what happens in heaven?"
"Unknowable wonderfulness?"
"Nonsense. The answer is nothing. Nothing can happen because if something happens, in fact if something can happen, then it doesn't represent eternity. Our lives are about development, mutation and the possibility of change; that is almost a definition of what life is: change."
"Have you always thought that?"
If you disable change, if you effectively stop time, if you prevent the possibility of the alteration of an individual's circumstances—and that must include at least the possibility that they alter for the worse—then you don't have life after death; you just have death."
"There are those who believe that after death the soul is recreated into another being."
"That is conservative and a little stupid, certainly, but not actually idiotic."
"And there are those who believe that, upon death, the soul is allowed to create its own universe."
"Monomaniacal and laughable as well as provably wrong."
"There there are those who believe that the soul—"
"Well, there are all sorts of different beliefs. However, the ones that interest me are those concerning the idea of heaven. That's the idiocy it annoys me that others cannot see.

By being unknowable, by resulting from events which, at the sub-atomic level, cannot be fully predicted, the future remains malleable, and retains the possibility of change, the hope of coming to prevail; victory, to use an unfashionable word. In this, the future is a game; time is one of the rules.

Mocking the wisdom that comes with age is a fit sport only for those who expect never to attain much of it themselves