I think this site would be improved a lot by removing the colouring or at least normalizing it so that 'more' is always one colour and 'less' another.

Electricity and oil are essentially access to material wealth. An American uses more because they probably have a bigger house on more land and a fancy big car.

Spending more money on health care could be good if it means you have greater access, or bad if it means you're just paying a lot for the same.

A class divide isn't automatically worse, it could be great for you if you're on top.