I think that's why man made up religion in the first place. Because it's just too big and unknown and scary for us to accept.
It's just like everything else we didn't have an explanation for - why does the sun come up every morning? Well, we don't know, so it must be a god driving a chariot across the sky.
We've always made up stories to make hard truths easier to swallow. I imagine this is the same. If I lost a child, it would be easier to believe that we'll be reunited than to believe that they are gone forever, so I make up a comforting story to get me through it.
I have left room for the possibility of an afterlife, but feel more strongly that it's like when you are put under anesthesia for an operation. It's simply black. Our bodies obviously decay and feed the grass, and so in some way, we live on. But not in the way our consciousness currently exists.
Great article!