That is what I try to impart on the kids when I am at school. They have absolutely NO idea how much energy is required to support their lifestyle. If we went all solar and wind and what not today, we'd all have to go back to subsistence farming and half of us would die due to civil war.
They also are under the misguided notion that we can all live in quaint little villages and ride bicycles around town rather than drive evil cars.
Again, as long as we all want to be farmers, and don't mind killing most of our neighbors, I don't see why that wouldn't work out.
I also tried to explain that if we're all farmers, no one will have time to be engineers or doctors or researchers or artists or anything wasteful like that.
And when you were done explaining, did they respond, "OK boomer"?
What makes this even worse is if you go to numbers. I take their heating expenditure from a gas bill and convert it to BTUs and then convert that to a rough measure of how much more electricity they will need just to keep up. Then I might share with them that here in Ohio they can get roughly 30 to 35% of their electric needs via solar (before factoring in those increased heating costs) for about five hours per day, tailing off at the margins. So they'll likely need four or five times the area of solar, beyond what they envision, to meet demand and more than that to have excess to store in the storage system that doesn't exist yet! And that's just one of a huge number of changes needed to stop burning fossil fuels - need to charge your electric car and solar area goes up again. Run out of room on your roof and you have to start coating your yard, with tradeoffs in the already mediocre efficiency of the panels caused by less than optimal location
Then I'll turn back to them, see the glazed look in their eyes, and realize they have literally no ability to make back of the napkin calculations in order to judge the scientific rationality of any idea