Nothing in the world wrong with a Nylon 66. Including it’s looks. I always thought they were space age, cool looking guns…and I saw my first one in the early 80’s. I’ve owned a few too, always enjoyed them. Nope, they aren’t Marlin 39’s, brownings, Winchester 52’s, etc. but I don’t think they were ever meant to be. One thing I noticed about the 66…it will eat up every single brand of .22 out there without a hiccup. I’ve seen some absolutely disgustingly dirty 66’s that just kept plugging away. Brownings won’t do that.
When it comes to firearm practicality….plastics are light years ahead of wood. No need to even argue that.

Agree….white lines look cool & are right at home on a 66.