What will come with the approaching boom of guilt-free energy is public support for doing more things with more energy, and instead of stagnated per-capita energy use a return to more-than-linear energy usage growth.

With that you get flying cars, space tourism, AI, cities in deserts with free water through desalination, better indoor climates with freer ventilation with the outside, cities skies free of ICE smog and probably a whole lot of things which are hard to imagine.