Computing in general is /huge/ now. X is dying is funny in tech. By raw number of participants has it ever really changed? Take MUDs for example, I remember my MUD days. There are still hundreds of active MUDs. Is X really dying? Who knows.

I remember playing MUDs in high school because my system admin blocked all online games, but didn't block telnet. I credit it with my high speed typing and finally getting better than 50/50 at spelling. I'm towards the later part of my thirties. Just checked out their website and they still seem to be alive and well. Don't even require telnet anymore, lots of browser or desktop apps to do what a telnet terminal did