Would you still believe in a religion if there was no promise of an afterlife?

Imagine your current religion, or any other religion for that matter, did not make any promises for any kind of existence after death, and even states so implicitly in their holy books/texts/stories that there is no Heaven, Hell, Valhalla, etc, or even reincarnation for mortals.

If this were the case, would you still follow that religion? Why or why not?