I've read more than once that writing by hand is better for your thought processes than using a keyboard.
Here's one look at the idea:
What's Lost as Handwriting Fades
I've also read that cursive is better than printing for processing your thoughts. That could be the case for some, but I don't know how universal it is. People are all so different in their creative expression.
When it comes to thinking and creativity, for me it's a mixed bag. I write lists (in printing) to sort and frame my thoughts. It's a slower process. I take class notes by hand (in a sort of printing/cursive hybrid) and I agree with the article in this, because when I have to condense the ideas and information I'm hearing into shorter phrases and restate them in my own words, there's some brain/body connection in the act of combining intake, process, and outflow that seems to connect it all together better than it would if I was typing notes on a laptop.
But when I write (whether it's creative writing of any kind, MLA or APA papers or a PM to a friend) it's always on my PC. I can't imagine writing a novel in longhand, although I know many a famous author has done just that, but it's not for me. This is a part of technology that I love, because the ability to type as fast as the ideas are tumbling out of my mind is exhilarating at times. Kind of a writer's high. Once it's down I can do all the paring, polishing, whatever, that needs to be done, but I had to capture the whirlwind first, and I couldn't do it the same without a keyboard.
(To my friends who've gotten a PM from me that was raw, unfiltered whirlwind - thank you for putting up with me.
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I hope kids continue to learn cursive. I think it's very helpful to young developing brains in the ways the article I linked to described, and they need to be able to read the cursive writing of others even if they don't end up using it themselves.
In a way that words on a screen can never be, words that are handwritten are the unique expression of a person - of the personality, style, and mood that's all their own. They leave a part of themselves in every line... the DNA of their mind, in a way.