... because you are permitted to
It's not even clear which country's law applies. General statements like that are most certainly wrong.
We got better at making electricity and we need less of it.
Maybe per person consumption of energy is declining (doubtful), but the population explosion and industrialization of current third world areas will more than make up for. Every projection of world wide energy consumption shows an increase in total energy needs, not a decrease.
(protip: never, ever accept a counteroffer!)
Honest question, as the parent also stressed this point and I have the dumb today: Why not?
The use of money is all the advantage there is to having money. -- B. Franklin