I've had to buy one fridge in my life and it's because the 20+ year old one that came with the house broke, and honestly it was repairable. Likewise, I had to buy one microwave after one that was like 15 years old broke due too much steam getting into the internal workings all the time.
Most new appliances seem to be replacing perfectly functional but outdated appliances in my experience helping people move them. The exception being washers and dryers, but they tend to get mistreated by the owners so it's reasonable that they have a shorter life.
