The idea that God would answer everyone's prayers (assuming there is such a God that answers prayers) is patently ridiculous, considering that a substantial number of people in every army pray for victory, and an enormous number of people pray for a million dollars or to win the latest lottery jackpot. ;-) If such a God were to answer all those prayers, well...

1. The answers would inevitably conflict with and contradict each other, therefore it can't work.

2. The whole world would go totally nuts, and society would probably collapse, causing world chaos.

3. That would immediately cause more desperate prayers which would conflict with each other in many ways, producing more chaos.

4. Things would get so completely fucked up that God would probably have a nervous breakdown at some point, and resign. (Some of this was touched on in a comedy movie where Jim Carrey got to be God for awhile and found out it wasn't as great as he had thought it would be...)

No, what is far more likely in the hypothetical case that any prayers do get answered is this:

You don't get what you ask for, you get what you need. ;-) I believe the Rolling Stones covered that concept in one of their songs. Some people may need things that they definitely wouldn't ask for!

Then again, it's all just theoretical, right? I am only floating certain possibilities here, not certainties. Keep that in mind.