The factual errors in your argument are extreme.
Working class wages were proportionately higher in 1970. Drawing a dividing line is hard, but somewhere between 1970 and 1980, wage gains became decoupled from productivity increases.
Medicine quite simply hasn't advanced significantly since 1970. Access to medicine by the underserved has, and accounts for much of increases in outcomes, as well as reduced environmental polutants and healthier lifestyles: clean air, clean water, unleaded petrol, lead-free paint, reduced smoking, and reduced alcohol consumption.
"Lifestyle" shopping was only just being invented at about this time -- shopping as recreation largley didn't exist. "Amazon" was called "Sears, Roebuck", you could buy a house, or a bed, or a wardrobe, with a 100% satisfaction guarantee.
Communications and entertainment are about the only area with significant improement, though I'd argue the quality of news coverage 1970 - 1980 was far higher than today -- most cities had multiple local papers with detailed coverage, and newsmagazines weren't the joke they are today. Television was more limited and video didn't exist, but movie theaters were much more common (and cheaper), and live performances easier to find. There was also a form of entertainment and information called "books", freely available in these terminal service devices called "libraries".
You've failed to account for decreased labour union participation (stronger job security), general life and housing security, highly subsidised educational opportunities, the burgeoning of opportunities resulting from the 1950s and 1960s Civil Rights movement, the long boom in opportunity in California (offsetting the decline of the rust belt), affordable air conditioning making life in the southeast comfortable for the first time, and the fact that in 1970, the advances of the next 30 years were rapidly approaching. I (and others) see the information revolution as largely played out -- its peak period seemed to be ~1995 - 2005.
Sources: varied, though Robert Gordon's The Rise and Fall of American Growth covers much of the changes in lifestyle, transport, health, communications, and work, from 1870 - 2015. It's especially damning on info/comms technologies excepting 1995-2005, and healthcare since 1970. Thomas Piketty's Capital in the 21st Century is one of many books addressing the rise in inequality, see also Anthony Atkinson's Inequality.