I don't even remember Esperanto being taught at the college level. If it's not taught consistantly in schools and/or spoken at home, how the heck was it to catch on?!
My point exactly, it's well designed, but considered useless.
regarding Esperanto:
An even more astounding fact is that there is a keyboard alternative to the standard Querty keyboard (circa 1870)that is easier to learn and to use. It would make nearly everyone a faster typist.
But is it taught? NOOOOOOOO. Because everyone still has the old keyboard and it's considered too difficult to switch over.