I guess "no longer exists" is too strong a word. There is still a core group of enthusiasts, many of whom meet at the annual
qep'a', and the occasional publication does appear. I consider myself to still be a member, and I count the others as my friends. On the other hand,
mataHmeH maSachnIS ("To continue, we must grow"), and we're just not growing. The new face on the KLI mailing list is very rare, and seldom remains for long.
I think the problem is two-fold: First, there has been no new Trek from Paramount in a long time, and a lot of new membership was driven by interest in Trek (some of those people left, but some found they liked the language itself and stayed). I personally thought it was the beginning of the end when DS9 went off the air, and Star Trek Enterprise did little to revive interest in Klingons. If the new movie renews general interest in Trek and in Klingons in particular, then this may change.
Second, the language eventually stagnated due to the lack of growth and of the resolution of various issues. You can only argue about
-moH for so long, especially when there's no way to resolve the issue. Similarly, although I think amazing things have been done with the existing vocabulary of Klingon, it could always be larger, but Marc Okrand has stopped producing new words in any quantity, and the ones he did produce are something of a disappointment, such as the names for Klingon birds, and didn't use the existing resources of Klingon, thus giving us no indications how we might expand the vocabulary ourselves. Contrast this with what Zamenhof did with Esperanto, where he basically just wrote the language and then turned it over to its users. (Of course, the problem that Paramount owns Klingon prevents that.)
Finally, the lack of a venue for publication in Klingon discourages writers. Why write if no one will ever read it? How do you even know if what you write is real Klingon, except by passing it on to others and seeing if they understand you? The KLI used to publish a literary journal,
jatmey, and also had a monthly newsletter in Klingon,
Qo'noS qonoS, but neither are active today. The KLI has the only (AFAIK) license from Paramount to publish works in Klingon; I don't know what would happen if someone else started a literary journal or tried to publish a non-authorized work.
My dream is to someday win the lottery, buy Klingon from Okrand and Paramount, and then turn it over to a committee to oversee its future.
