Most of my guitars were purchased in the used market and have loads of scratches and dings! They add character!
To be total honest, I tinker with my guitars as much as I play them. I definitely wouldn't call myself a "player" but definitely not an Inspector.
I never bought a used guitar until recently. I needed a bass for a paying job and with some sound bass advice from E.SG I bought an imported Ibanez off Craigslist for $60.00
It's not old, but its had a rough life. I filled some deep gouges with nail polish and clear. Plays good and is quiet, much better than I expected.
It amazes me how beat up guitars get. I gigged with my 1987 Squirecaster since new and no dings, or chips. The paint has been polished through on a few places on the back and a Levi rivet has worn a groove in the spring cover plate, but it still looks new.
I guess because I never had much, everything was cherished...
I still have the Pinewood Derby car my Dad and I made in 1974...





