A lovely nun I once knew told me that she had come to the conclusion that philosophy is the most interesting useless thing you can do. Her point was that you can waste endless amounts of enjoyable time debating things that no one knows and no one can prove; but the point of life, she said, is to *do*. To put it in philosophical jargon, she was more interested in theopraxis (acting in the world out of beliefs about God) than theology (debating abstract ideas about God). I think she had it right.