I came back home from the Kerrville Folk Festival to a full tank of pure rain water. I didn't have to haul 8 pound per gallon canisters from the water plant at 10 cents a gallon. Nor did I have to pay any municipality to pipe it to me. IT LITERALLY JUST FELL FROM THE SKY!
Now, if oil fell from the sky, which could very well happen here during the hurricane season, you'd catch it right?