Why Teach Students to Write in Cursive?

From a New York Times column by John McWhorter headlined “What’s the Point of Teaching Cursive?”:

It’s quaint to read how common it was in the late 1920s, when sound had just come to the movies, to assume it was just a fad. More than a few people thought films had been better without sound — that actors had been more expressive, that sound was intrusive upon the artistic illusion and so on.

I suspect that complaints these days that students are not learning cursive will look similar in a hundred years.