Something that a lot of people get wrong in these calculations.
Life is more expensive these days, and I don’t mean cause the prices are higher.
In the 70s, you didn’t need higher education to do well, now you do.
Not everyone had or needed a TV, now having a phone and internet is kind of critical for day to day life.
Things were closer, it was easier to not own a car.
Getting a job was simpler, you could just walk down a street and try different businesses, now you got many rounds of interviews.
I could keep going, but overall, things just take a lot more effort while people having less and less free time.