Belief in an Afterlife seems rational

Is an afterlife consistent with known facts?

Some living beings believe in an afterlife, and this seems quite sensible to me. The very fact we exist in this life, and went from non existence to existence is enough to make this a sensible belief.
Both denying the afterlife and believing in one seems sensible to me. I am most happy with believing the possibility of an afterlife but also siding with logic and sticking with what we know for sure.