"My kids can write cursive but why? When will they use it ... besides signing their name on ... what?"
Many legal documents require a written signature. And one place other cursive writing should be used is when writing a check.
Yes,, yes,, I know,, not as many people write personal checks anymore. But if we keep using checks, which makes banks continue using them, we can, in a small way, prevent total transference of a paperless money system. I still use checks to handle a lot of my financial transactions.
I like to think of it as a way to keep another one of my freedoms,, and hopefully prevent a complete removal of a hard currency type of system.