It’s a fundamental principle that if something is priced more
cheaply then it’s used more, and if it’s priced more
expensively then it’s used less. It’s also a fundamental
principle of a free market that a commodity’s price should
accurately reflect its cost to produce: a carrot’s price should
include the farmer’s time; the alternative uses to which he could
put his land (e.g. building condos instead of planting carrots); the
cost of extracting the steel for his tractor (including the cost of the
mine it was pulled from, the smelter which produced it, the employees
which removed it from the ground &c.); the cost of designing said
tractor, and so forth and so forth ad infinitum. It should be
clear to see that if, for some reason, farmers got free land for carrots
then they would produce more carrots, and that carrots would be cheaper,
and thus more carrots would be eaten.
It’s less clear to realise that those extra carrots
aren’t really free. That free
land could have been put
to another use—a more productive use (how did it
become free
anyway; did we all pay taxes to buy it from Peter
and sell it to Farmer Paul?). But we see the cheaper carrots in the
store and don’t see the park our kids could have
enjoyed, or the housing we could have lived in, or the university
whose researchers would have discovered a cure for cancer.
Fortunately, most products do more-or-less reflect their cost to
produce. One notable exception is food: due to subsidies, some of the
worst foods are cheaper than some of the better ones—and
Americans are fatter than ever before as a result. Another instance
is gasoline.
A report
on the real cost of gasoline examined all of the costs
which go into gasoline production and found that gasoline
should cost between $5.60 and $15.14 per gallon. Last I
checked, its actual price is around $3 per
gallon.
To put it another way: you're already paying between five and fifteen
dollars a gallon; you're just not paying it at the pump. If you cut
back your gasoline consumption by four gallons a month, you'll save
about twelve dollars but will still be paying eight to forty-eight
dollars in taxes for those four gallons you didn't use. You can see
why it doesn't make sense to cut back on gas usage.
This would explain why the United States
uses more
gasoline per day than the next twenty nations.