Yes, CO2 may be bad but that is if you have first reached the level of usage in Australia, Kuwait or Norway. However, if you are a poor person in developing countries like India, China and Brazil, you still need a electricity to create well being even if it emits CO2 and consumption of 2,500 kw seems to be the magic number.
I think the focus to reduce CO2 to control the climate (and this is being questioned now by the solar cycle theory) we should not forget the current human beings who need electricity to survive and live a good life.
The greater a country’s electricity consumption, the greater the well-being of its people. Electricity doesn’t cause well- being, of course. But it is a powerful enabler. When people have lights that allow them to study and work after dark, refrigeration to keep foods and medicine fresh, pumps and purifiers to irrigate farmland and produce safe drinking water, and cell phones and computers to connect them with commercial, educational, and health care resources, they can more fully participate in the social and economic activities that drive human development.
A little electricity goes a long way. Note that when annual consumption rises from 0 to just a few thousand kilowatt hours per capita, countries move near the top of the HDI scale. Argentina, with per capita consumption of about 2,500 kWh, has an HDI score approaching that of Canada, whose consumption is seven times higher.