I can't be nostalgic about a period of time before my own lifetime, but I do have fond memories of my own lifetime (people, places, events, cars I've owned) between the late '80s and 2008, esp. the '90s, but do live in the here and now and look forward to the future.
As far as modeling subjects, I'm fond of a lot of '60s-70s cars because I've seen a lot of them over the years and can appreciate the designs...cars from the '50s and before I really can't relate to, but there are some that I find interesting. Mostly I prefer modern car subjects in 1:1 and scale..