Chris L. has a point. I never needed that second car (my wife has one). Bicycles, with a little ingenuity, can substitute for cars more and more often. Some people use large panniers and go grocery shopping on their bikes. And think of how you are not using anything up (not really), like gas, oil, rubber, engines, clean air, forests (covered with asphalt--you use the road, but you don't wear it out like cars do), metal and plastic, etc. This is true frugality. And cars are subsidized in many transparent ways. A good bike can outlast a good car (or several good cars). How much does Jenny Craig cost? How about triple-bypass heart surgery? And what price can you put on pure pleasure in a world that finds every way it can to force people to pay for just about everything?
I like the way you think, A. F. Baker.