Harry continued "Or maybe our friend here has somehow imbued us with calm. I don't know."
Rick didn't. "Or maybe we've just come to accept we are going to die. Or maybe dead already..."
It is correct that we do not understand your concept of death. That is because death cannot occur in our dimension free of space-time and it's entropy. Energy cannot be destroyed.
Your energy passes from one moment to another one moment. It does not have death one moment and be created again one moment.
You do not understand your energy persists.