I'm definitely better off than my parents or grandparents. Hell, we have stories in our family where my uncles would shower at the communal bathhouse cause their home didn't have a bath nor hot water. Everyone used to wear hand-me-downs. We used to send cassette tapes to family abroad because international calls were so expensive. We flew every few years instead of multiple times a year. We saved up for CDs, and I literally never, ever went out for dinner to a restaurant (outside of a rare holiday) with my parents. My dad lost both parents as a child to old age, my grandfather worked 6, sometimes 7 days a week, my grandmother spent almost the entire day running the household (e.g. washing clothes by hand), they had no retirement and lived like that till death.
I'm often surprised about this idea we've got it worse off. The conversations usually revolve around housing, healthcare and college having become drastically more expensive. (although, never normalised for interest rates that dropped from 15% to 3%, homes that average 2x larger than 60 years ago with fewer people, life expectancy increasing by a decade since 1950 etc etc). Life isn't better in all respects, but on the whole I certainly wouldn't want to trade with past generations. And a lot of that boils down to productivity allowing new measures of wealth for many.
If we look at it on a worldwide scale, the difference is much, much more pronounced. Many lower income countries saw massive productivity improvements. We shouldn't forget that the past 3-4 decades have been all about globalising markets. Factory workers in the US now compete with those in China. IT staff the UK is competing with IT staff in India. Technology is relatively mobile and goes across borders easily. You cannot measure ceteris paribus productivity improvements in terms of gdp per capita in the west without correcting for increased competition abroad (e.g. in China). And in doing so, you will find that there's even bigger productivity increases in lower/middle income countries, too.