Vintage clothes come with a laundry list of condition issues.
Picture this scenario: You just spent the last three hours digging through old clothes in the local Goodwill, and you finally find the Made in USA Woolrich shirt jacket that you've been searching for—only to find it has a moth hole or cigarette burn in the middle of the chest. It's not only a major bummer, you also wasted your time, which you could have spent pursuing something worthwhile.
Also, if you're into vintage sneakers, you have to constantly worry about dried-out midsoles that will crumble only three steps out the door. Now, you have go back inside and find another pair of sneakers for the day—and you're late to work.