If you pray for your sick relative to get better, you're asking God to make overcrowding on this planet even worse. If you pray for your team to win, you're also praying that the other team will lose. If you give thanks to God for providing you with a bountiful harvest, don't forget to also give him a bloody good bollocking for failing to do so for billions of malnourished people the world over. These things are possibly best kept to oneself.