The problems with these handwritten notes is that these aren't searchable. And we cannot share parts of the note(like copying text) easily. But it is quick and (sometimes) beautiful.
The technology is improving though. In apps like Notability they can be searched. It will index all your handwriting, which is great. Again, this is limited to iPad. This tech is not available across platforms.
And with these notes, you cannot add hyperlinks and reference external stuff easily.
I mainly use handwritten notes for noting down things while coding - to draw flowcharts or make a quick list of things to do. It is really handy for that. I had a lot of notebooks for this in the past. But now, iPad is the replacement for all of them. (And its searchable too!)
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