An often recited quip, both in my home and in popular culture, is "They don't make them like they used to." Most recently, the quote was brought up when our refrigerator stopped dispensing filtered water.
Is there data to back up the claim that quality (as measured by longevity) in large appliances like refrigerators, ovens, and washing machines has decreased over time, from the 1960s to the 2010s?
Pardon if the question isn't scientific per se.