The answer will always skew towards teens and twenties because after that point your brain is much less likely to think of any new/other music as “good”. It’s the real reason why I like their older stuff better is not just a hipster joke.
I am never nostalgic. I grew up in the late '50s and the '60s, in the shadow of the Cuban Missile Crisis and all that followed it, with a boatload of other baggage that I have only recently begun to unpack. There is nothing for me to be nostalgic about.