Canadian Author Margaret Atwood is quoted by Bill Moyers on his “Faith & Reason” site: “If a god showed up every time you put a quarter in the prayer slot it wouldn’t be God, it would be a puppet that you could control by doing that…that would make the deity subservient to you. So it wouldn’t be a deity would it?”
That’s good. It points a problem many Christians have, because we kick around a lot of bad theology on prayer. God never announced that he would pardon us for specific sins after we repeat a memorized prayer nor does he wait for us to use specific phrases from the Bible in our prayers before acting with power. He is the Lord of all creation and everyone in it. No one can stop him from doing what he wants and no one can make him act.
For more on this idea, I recommend a book by J.B. Phillips called, Your God Is Too Small.