People from my generation (old millenial / young gen X) often hark back to the 1990s as some sort of halcyon age, but imagine if we had today's tech then. Imagine the 90s refracted through today's tech / media landscape. I bet we'd have felt differently about it.
Weather in London has become nicer in the last decade, with winters that are milder on average and summers that are warmer and sunnier (except this one). However, inside of London's thick stone houses you don't notice any difference in winter while you also are cooked alive in the summer heat.
This has two advantages: it's more energy efficient than any other way of heating buildings, and they can be run in reverse for air conditioning.
A lot of those buildings didn't come with indoor plumbing or electricity, after all.