Show me the evidence for a supreme deity....
Not some book that is supposedly his word ; because that word shows him to be a disturbingly messed up deity.
Also, don't point to "the world around us" ; as there are numerous evidences to prove there was no "intelligent design" behind that.
So, again, show us the proof... without such proof, the hypothesis that "atheists will turn to God on their death bed" makes no sense!
Will I on my death bed turn to following a sporting team that I have never had an emotional attachment to while living? No!