As an artist and a writer, longhand writing is really important to my creative process. I've noticed that if I spend too much time typing everything, my thinking gets sloppier. There's something that happens to the brain when you use word processors to the detriment of longhand - basically, you confuse the writing and editing processes and this creates subtle friction between the hemispheres as they both try to do their job at the same time. This often leads to writers' block, crummy sentence structure, poorer logic (if you're writing something persuasive rather than purely creative), and muddier, weaker writing all around. When I found that out, I made sure to start taking pen to paper more... and I've noticed a marked difference after a while.
To that end, I'll probably have to give up my all-caps print script. Cursive is way more efficient! And for those of you who hate writing by hand because the writing utensils are terrible, I got two words for you: fountain pens. They are an absolute JOY to work with, and I can't imagine going back to ballpoint pens or even pencils after using something as buttery and tactilely pleasurable as a Kaweco pen.