The Importance of the Immersion Heater

In the 19 seventies and into the 19 eighties, irish people, british people, i know as well, maybe europeans, are not too sure, had an obsession with the immersion heater. And why is that? Because of the energy crisis in the 19 70 e. The price of energy relative to everything else has fallen dramatically. Now we're in the new world where the price of energy is going back to 19 seventies levels. Are we going back to the seventies completely right?