>>1076971
Wrong. If you're good at electronics and able to do repairs here and there, well made power supplies can last you a lifetime. Especially the older (less efficient) ones.
>>1076972
I used to scavenge electronics when I was young and it was actually hard to get at some of that stuff. I still have parts lying around from 30 years ago I can't bring myself to throw away at that point. Not worth it these days, especially for passive components. Much easier to just order them online somewhere. Nothing you'll find in a power supply will be worth much. There are also better sources for wires, old power cords and cables for example.