Fossil fuels are cheap, much cheaper than it would cost to pay a group of people to generate your electricity for you. Assume that your power bill for a month is 600 kWh.
Let's assume that you had to pay a group of people $9/hr each to run a hand crank generator to get your electricity. The output of the generator that each person is using is 100 W (and can be considered 100% efficient). How much would you have to pay for your electricity for one month, in dollars?