Some consolation...
It might be worth tallying up all the people employed in the United States, and asking yourself how many are working in jobs that not only didn't exist in 1960, but had never even been dreamed of. Quite a few, I'd bet. Old jobs go, new ones come in.
I will grant you that it's gotten harder to sustain an American middle class lifestyle with nothing but a good strong back and a solid work ethic.