Re: Dr. Z says modeling amps are going to be the next wave...
Every few decades the guitar mania dies down a bit, and then some guitar hero revives it. In the eighties, for a while, everyone out there had a Casio keyboard and a haircut that looked like they cut it with a weedwhacker. Grunge hit and a week later the same idiots are running to the music store to get Strats and Jaguars in their flannel shirts. The guitar has been around since the 1500's it is not going anywhere nor are tube amps.
It is interesting that you mention the late 80s and early 90s, as guitardom seemed a lot healthier and more interesting in the former than the latter in my opinion. But that is beside the matter. It is more important that we haven't had anything like it since: I have not seen anything resembling guitar mania in at least 20 years, but rather a slow and inevitable decline.
You are right that the guitar has a long history. For most of its history it has been a modest, unassuming instrument, with certain bouts of popularity, to be sure, but rarely sustained interest. The violin and the keyboard have historically been far more important instruments. The guitar's ascent as
the instrument is a 20th-century phenomenon, which was spurred on the facts that it could be heard over other instruments when amplified, and that it is a relatively easy instrument to play and to produce – the electric guitar in particular. If, beyond the sound, ease of use and production are the chief virtues of the instrument, those same forces now work against it, when you don't even need to play an instrument to make music.
I love the guitar, and I would love to see it revived, but at this point I have my doubts. It rather seems to me that it will take its place along the concertina, the banjo and the clarinet as instruments who are still played, but whose repertoires and styles are quite clearly defined, and whose mainstream appeal is limited. The plus side is that more cool, old instruments will become available as players retire, sell their collections or die.