I'm amazed by the number of pilots you run into like that. When I was pa32 shopping I looked at one that had a 20 year old w&b that was clearly from before a major avionics refit. The owners had no idea. They repeated the old "as long as we can close the doors we fly it". You can get away with a lot in a pa32, but to have never calculated w&b?!
Last fly in I went to, awos was reporting 400' ceilings, which I found to be accurate as I flew the rnav approach. Meanwhile when I switched over to ctaf, there was two RV's flying a "vfr" traffic pattern.