I don't see how you can claim things were more energy efficient back when. Old houses had wooden siding, studs, then plaster. No insulation in the walls or above the ceilings. Compare the old tube tvs with the modern ones. It seemed like the tv repairman was always out at our farm changing tubes. The channel selector had something like 13 choices. Black and white, not color tv. Cars today get a lot better gas mileage. Somewhere in the mid teens/mile was common. Now it's in the upper 20s/mile. A car used to be on its way down after 100,000 miles or so. Now they're just well broken in. I just added some lights to my trike. The two added LEDs in front together draw 9 watts, yet outshine the high beam headlight that draws
55 watts. Look at the lighting on semis. The vast majority have LEDs now. It looks like the trucking companies are retrofitting them to the trailers. There's a website, Carpe Diem, written by Mark J. Perry. He's written a couple articles in the past comparing typical household items past and present. The hours we work to buy the modern versions is typically a lot less than in the past. One article is here: orCut rest.