“Nature” is us, too. It’s constantly changing, but there’s as much of it as there ever was, because our nature is to build. Indeed, so are the ants whose ant hills that you criticise cities for resembling.
The improvements to duration of lifespan have also come with improvements to quality of life.
My father’s final year of life started with a cancer diagnosis, and while it was an extremely long way from “fun”, tech gave him mobility, and he’d only lived that long because of half a lifetime of treatment for disease-induced epilepsy.
My mother had a few years of Alzheimer’s — still essentially untreatable, and yet tech made it easy to keep her entertained, and GPS tracking made it easier for us to look after her without her getting lost due to a moment of intention on our parts.
Our good years involve less and easier work, in better conditions, than 1972, much better than 1921, and insanely better than 1871. When did we start mandatory schooling? When did we end actual slavery? Conscription? When was polio vaccination introduced, when was smallpox eliminated, when was anaesthetic easily available for childbirth? So yes, life is much better than it used to be.
Of course, I actually like living in Berlin, metro area population 61% of what you think the entire plant should have.