No, you are not alone, although maybe we are not many.
But there are still people creating and downloading addons. Especially for FS98, and FS2004, also, although that one is less vintage, but still.
I myself am very enthusiastic about enhancing my FS2000.
In particular, I love to bring back memories of all aviation times, when it was much more diverse and enjoyable, IMO, so to recreate that, all versions are more suitable than the new ones. (More old sceneries and planes, even the ones released in those times are old now.)
I also love to enhance and enjoy those old versions, and, after been a while enhancing and flying them, when I fly a newer one, even FS2004, I have a feeling of realism like if I was flying a much newer version.
I recommend you to visit this fellow's channel (KilrTv) in youtube. He flies all Flight Simulator Versions, (from the Commodore Amiga, :D), and is very friendly and helpful about everything.
I can also tell you I am from Canary Islands and I am recreating TFN traffic from the 70's, trying to get it as real as possible with FS2000 and FST I think I can publish a couple of videos of it in 2 weeks, if you are interested.
I sent you a private message.
Regards.