Few people had air conditioning. Cars might last 100,000 miles, if you got a good one. They performed poorly, got awful mileage, and crushed the passenger compartment if you got into an accident.
Many people smoked, and people died younger. Medicine wasn’t as good.
Rich kids might have a giant set of books called an ‘encyclopedia’. It was about the only way to learn things that were outside your circle, there was no internet.
TV came in 3 channels, and you had to be sitting in front of it when your show came on. There was no way to record a show for later viewing.
Of course race relations were much worse then. So were things for women and others. Job advancement wasn’t the same as it is today.
I wouldn’t go back for anything. The poorest people today ( even the homeless, who seem to often have really nice tents and weather gear, relatively ) have it better than in 1970.
I don’t care what things cost. Practically everybody is richer today.