Part of the problem is that very few can actually understand the equipment they work on. IF it doesn't show up on the computer diagnostic their chances of fixing it are small to nil. That goes for just about everything we buy today.
You go into a bank knowing you have lots of money. You ask for $40 cash. The teller says the system is down. No money. Sucks to be you, we apologize. Why would you think that the washing machine or car would fare any better?