Cursive is inherintly useless. Whether or not it writing is aesthetically appealing, outside of using it as an outform, is irrelevant. The purpose of writing is to convey meaning, and that only requires that the writing is legable. And not all people write more legibly in cursive than in print - such as me, for example. Besides, what other possible uses are there? Cursive isn't necessarily faster than print. Cursive is useless when dealing with mathematical formulas. Outside of mathematical formulas which might be easier to write on paper, there's no reason to not type, as typing is much easier and more legable than most forms of handwriting.
Calligraphy may indeed be an excellent art subject, but art is not required to understand a sentence.