I am not totally despairing. I think most people either care about this or can learn to care about it. There is so much DIY and home improvement, etc. Sorry we can’t address all super-wealthy, well-off, middle class, owners, renters, rural, urban, poor in one comprehensive unified solution. But just about everyone has a roof over them, some own them, some have a shared roof, and some own a roof or two (garages), and all our transit buildings, garages, depots, stations etc. have roofs and so do many of the buses, trains, and trucks…and they sit outside most of the daylight hours.
And we are talking about electricity here…something we already have, and have mastered, and have infrastructure for. Electricity which can pretty efficiently handle our power and locomotion needs except heating. Making heat with electricity has usually been frowned on as an efficient use of electricity. Anyways, this isn’t some hyperfuture method…we already are setup for electricity. If the future savior was a complete change for every human…like some kind of plasma or fiber-optic or liquid fuel or pneumatic based system were required then all the infrastructure needs to be invented first.
Geothermal might be best for heating, but at least some electrical heat can be made without necessarily burning up our oxygen and give off emissions which all other furnaces and fuels require. If the solar PV is used to make the electric heat, it is at least emission and O2 neutral.
ETA: Sorry was rushed, wanted to clean this up a bit…I said lots of people care about this or potentially can/will care. I think there is a ton of home improvement and DYI ambition in your avg. person, and if petrol and utility electricity were to get REALLY pricey folks would be motivated. If it only costs them another $30-40 a month to be really wasteful, they will be. And rich people don’t care, at current rates, how much it costs to light and heat and cool their mansions and 2nd homes and commercial buildings. But even they often see the wisdom once they realize they can cut costs 25-75% at their commercial and rental buildings.
Also wanted to add that cooling and heating doesn’t have to be such a horrible thing if the power is carbon and oxygen neutral…like some geothermal, solar PV, wind, tidal, solarthermal, etc. Have to stop burning things, first and foremost.