In the short term the price of gas goes up and down. However in the long term the price of gas goes up and up. It is almost like oil is a non-renewable resource or something. Nah that is crazy commy talk.
No, it's called "inflation," and it happens with all sorts of commodities. We measure it with the Consumer Price Index.
The real cost of commodities generally declines over time. In fact, Julian Simon and Paul Erlich made a famous bet about this. Paul Erlich, you'll recall, was the doomsayer who predicted the population bomb and recommended eugenics, sterilization and a global government control over all resources. (Notably, the coauthor for his book laying all this out was John Holdren, now Obama's chief science adviser.)
They bet on the prices of various commodities, and every single one of them went down. Simon won his bet, and Erlich had to pay up.
But it doesn't matter how many times you loons are wrong, you'll just keep predicting doom, over and over again.