I'm also awful when I have to remwmber dates or numbers, I just remember that I bought on Black Friday. So, I dig up deep in my email and I found that I bought my Nano S back in 2017, so, I already have it for 4 years. And here is how it looks:


I don't use it very often, so, it looks almost like new. You can see little scratch on metal part of wallet, but honestly, I haven't even noticed it before I took photo with flash light. Now I'm looking into it with my eyes and I can't see that scratch. Well, maybe it was just some dirt.
Plastic part and screen of my Ledger looks perfect without any scratches.
I suppose that it would look much worse if I would use it on daily basis.
From all box content I only use USB cable, but unlike you I removed foil from it