Call me a Luddite, but learning to write without a computer is as important as learning to add without a computer - that is, essential.
Why? I just can't see relationship. Adding without a computer teaches you a mental skill, cursive is more about motor control and dexterity. There is no substitute to mental skill, but I'd rather apply my motor skill and dexterity learning to something applicable in my life. Learning cursive is, in my opinion, a waste of effort that would be better applied elsewhere (typing perhaps).
Cursive is simply not relevant anymore, if we want to scribe fast, we use a computer.
Oh, you Luddite -> There done.