Why Cant We Go Back In History?

Global modernization leaves massive complications
to the rest of the planet. Times in history from the 1940s
to the 1960s were much more simple and easy. Society has
made everything a lot more confusing because of formalities.
And paranoias about revealing truths. It was easier when
diagnoses weren't given and over complicating illnesses
mentally and physically. Why cant we all just live like
primitive cavemen? it was a lot more simple and easier.
These days people are narky and ridiculous because of
superiority in other regions. Which is unintelligent.
I am 18 but like an old man at heart lol.