My quality of life at any time in my past was notably better than what I see as the normal quality of life for people of that age and that economic status now.
And if nothing changes in this setup, I see no prospect of significant numbers of them achieving greater prosperity via moderate habits and prudent decisions over time, as I did. So as they age, most of them, they will remain worse off than I was and am on average - unless current trends are reversed, and government improved.
Meanwhile: Nothing on the internet is "free" - the cost of obtaining and maintaining a serviceable internet connection varies by person (education, etc) and by need, but is almost always higher than the 4.95 @month I paid for phone and library services back in the day. (Complete services - including maintenance and repair of the phone. The local library in my high school town - population 17,000 - had entire shelves of books detailing home repair, car repair, skill acquisition, etc. Not only that, they would order books to lend you. The price was a few pennies on the local property tax bill. I learned how to swim well from a library book). Worse, Americans pay significantly more than other nationalities (two and three times as much) for any given level of internet service - and often cannot obtain what is standard in other places at any price.
Low prices at big box stores often require a working car. That's a high cost (the burden of parking tickets alone, in the inner city, is a significant economic factor.) And it's almost impossible to get a job without a cell phone - again, a significant cost.
The small hardware and durable goods stores of my past city neighborhoods carried what the local community actually needed - such as plumbing supplies exactly matched to what was actually installed in the aging housing stock in the immediate vicinity, sold with specific instructions on how to handle whatever problem had come up. The big box stores do not carry such things even today, and as far as getting good advice one is lucky to find someone who can point to the right shelf of stuff that doesn't fit. (I recently found what may be the last remaining source in my region for a really good snow shovel - long handle, wide steel blade, push style, triangle brace. It's a small feed store catering to hobby farms, people with pet horses and goats, etc. Compared with the situation if such stores vanished completely, my quality of life after a snowstorm is much improved. That makes it better, in that specific way, than anyone's who has to deal with snow using the shovels found at big box stores.
Also,
1) the low prices are a consequence of cost savings via centralized manufacture and shipping innovations - those cost savings would be available to the small stores of today, rather than bound up in vertical integration and other forms of monopsomy and monopoly, under better government.
2) anyone who regards lower prices for airplane tickets as a significant improvement in the lifestyle of the low and middle class American is not in contact with economic reality in this country.
3) no estimate of quality of life that omits debt is worth a minute's attention.