If I were the one with a terminal disease, I'd want all those people to give money to charity to fight the disease, or volunteer to work with sick people to make them feel better. Anything but prayer. It's just the laziest, most worthless thing one could do. But I guess it made the prayerful feel better about themselves.
Indeed. It's a popular form of support because it doesn't involve donating any money or more than a few seconds of time, but you apparently still get that warm glowy feeling knowing that you've helped.
How have you helped, exactly? That's irrelevant.