Basically how I came around using it, was instead of having txt files, office files and a bunch of screenshots scattered around on the filesystem under the respective project directory, I started organizing such content inside Notes itself.
In systems like that, I often find myself in the frustrating situation of “I know I saw a sentence with <phrase> in it; which of the three systems should I search in? If I don’t find it, is it because the phrase was slightly different, or is there a fourth or fifth system I need to search?”
It’s maddening and is my several times per week experience.