YES- I've definitely learned to appreciate the power cords that came with my equipment. Without them, I'd never have known just HOW MUCH BETTER the ones I replaced them with sounded!
Underappreciated components.
Disregarding differences in individual personal tastes, if you have found something to sound good to your ears and you have had alot of experience to say this betters or equals most of what is recognized by the community as excellent performing equipment, do share it with others.