Yep the family & friends. I do take care of people I know and my repeat customers as well.
The "Classic" as it's called has been the same design since about 1945. That basic 4 to 4.5 qt has been going strong all these years with no real changes other than slight refinements. When they first came out as the K4 they were marketed "door to door". In particular to families who were just becoming "electrified" but were designed to work on both DC and AC with voltage from 80V to 145V either AC or DC. So families who were using wind machines to charge banks of batteries could buy one and get wonderful home baked goods. Around 1975, they changed it slightly to use a "solid state" speed control. Sort of a rudimentary pulse width modulation. Using a mechanical governor and a solid state rectifier board to be able to use the same motor, but allow for cooler running, and then only AC current (even though internally it was still a DC machine). And it is the same to this day. It's strong and durable. And even most of the internal components are all still made in the US as is the actual machine built in Ohio. Excellent products.
But yes they can be broken. But it takes a lot to hurt one