A few years ago, one of my cats wasn't doing well. I had just started college, and I didn't have money to take it to the vet. Desperate, I asked a deeply religious friend of mine to pray for the cat.
Of course, I don't believe in the power of prayer, but my friend does. I felt powerless to help the animal, and if my friend -- who sincerely believed in God -- prayed for help, then in a way it felt like SOMETHING was being done. It would have brought me a little comfort, even if it wouldn't help the cat.
After some thought, my friend told me that she couldn't pray for my cat. If she prayed for my cat and God healed it, and I failed to acknowledge the gracious gift, then God might become fed up with me, was her logic. She was concerned that If God did something for me, and I didn't acknowledge him for it, he'd turn me away, and I'd never get saved. In her mind, it was better to not ask God to help my cat; that way, I wouldn't have the opportunity to snub him with my ongoing agnosticism.
People like my friend, and Spud here, they don't worship very altruistic gods, do they? God's attitude always seems to be, "Fuck you, got mine."
The cat's still alive and kicking, by the way. A former stray, she's a crotchety old bitch with FIV, and all the health problems that go along with it.