Funny that because I grew up in the 80s and for me the golden age was 10 to 15 years earlier and I saw Windows 98 as the decline.
There was so much variety and experimentation in the 80s, and so much excitement too when GUIs first started appearing on home computers. There was also much more diversity in the computing landscape with different hardware architectures and operating systems. In fact back then DOS machines were some of the least interesting hardware and early Windows (pre 3.x) was just terrible compared to what Acorn, Atari, Amiga and Apple were doing. Then came the mid-90s and everything had converged into x86 running Windows. I remember at the time feeling rather let down by just how boring and crummy desktop computing had become considering all the interesting things that preceded it. Things picked up again once I discovered BeOS and Linux -- I guess even in the 90s I didn't like Microsoft Windows and to be honest little has changed over the years.
That's just my opinion though. The "golden age" is a very subjective thing that I suspect is largely driven by the age of the observer.