IMO this is the down side of knowing that there is no god. It appears that early humans created an after life as a counter to the horror of nonexistance.
Religion, let's face it , is all about denying the reality of death.
A religion that doesn't have a hope of an after life has no followers.
To me life is a circle. We come in hairless, toothless and totally in the care of loved ones. That's how we leave. Our 70 or 80 yrs is all about preparing for this time.
As others have said, enjoy the ride!!!
Yes, children dying is the most tragic experience