Speaking as a recently-bereaved person myself, I can say that, although personally immune, I can see how people can be comforted by it. The religion-as-placebo argument is full of pitfalls, howeber, and I don't imagine many people might be convinced by it.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'