I found out there's a term created for somebody feeling nostalgic about a time period they never experienced called anemoia (I don't think it's made it to the dictionaries yet). Basically there are two time periods that I usually feel nostalgic for even though I didn't live through them.
The first is the 1930s-1940s (even thought it was actually a shitty time with the Great Depression and World War II) and the 1980s-1990s. What about you?