Worldwide poverty went down, but the middle class lost buying power since the 80's. Before that time 1 job was enough to live, today you need 2 jobs, so man and wife should both work. The average income in the US is around $36,000. With that money you cannot live a normal life like we did in the 80's.
The statement "The standard of living for most people in the world is the highest it has ever been" comes from the fact that the really poor got a "better" life. The average middle class family did not get a better life. A lot of costs went much faster up than the salaries, so the buying power went down. Especially RE, to have an own house, became much more expensive, taxes as well.
https://www.investopedia.com/ask/an...-current-cost-living-compare-20-years-ago.asp
Inflation Examples
For example, the
Bureau of Census reports that the average price of a new home in January 2000 was $194,800.4
According to the inflation calculator, that price in January 2020 should be $297,705.3 The same report places the average sale price for January 2020 at $402,400, more than 35% higher when accounting for inflation alone.5
The same method can be applied to see if household incomes have similarly increased. The median
household income in 1999 was $42,000, according to the Census Bureau.6 According to the inflation calculator, that price today should be $65,191 in January 2020.3 The most recent year with full data available is 2018, which places household income at $63,179, meaning that it has failed to keep up with inflation and is 5% below where it should be.7
The average cost of buying a new car in 1999 was $20,686; adjusted for inflation, that price today should be $31,874. However, according to Kelly Blue Book, the average cost of buying a new car in May 2019 was $37,185, 14% higher than the price when accounting for inflation.
The Bottom Line
Taken together, these figures indicate that, while the average person is still making the same amount of money when accounting for inflation, prices for many of the daily necessities have gone up considerably, which means that each dollar earned does, in fact, buy less than it did 20 years ago.