> Another interesting statement, should it not make sense for a government to do what it's citizens want?

Nope, not always, and this is why direct democracy is pretty inefficient. People aren't experts, are often shortsighted and thinking at the micro level: many government policies and choices need long term thinking and expertise at the macro level. Take a look at Switzerland - "green" measures such as a carbon tax, which is considered by many experts as one of the best policies to reduce CO2 emissions, was refused by voters, because they're thinking about the impact it will have on them personally, now, and not about all the negative things which will be reduced with such a tax.