What always bothered me the most is that when zealots claim that God answered their prayers, it is always at the expense of someone else.
If God "answered your prayers" and you won a game or award, it implies you are God's special chosen one over the other contenders.
If God "answered your prayers" and saved your child from cancer, it implies God had the ability to save other children from cancer, also, but chose not to.
I don't really think people understand what they are saying when they use that phrase. I think it's just become cliche` and something people say without thinking.