I think plain files are great but really I take notes from far too many places and I want to take notes alongside my browsing. Most of what I write is always in response to something but its a response I don't want public. It's a weird zone to be in.
If anyone is looking for a note taking app that's pretty brain dead simple, I made one. This is really more about note taking on websites rather than general note taking. I also like to think by focusing on just the notes and making it feature complete at this point means that it will last for a long time.
https://leftwrite.io
https://leftwrite.io/how-to
One thing I tried to do was make sure everything is exportable and that backups are on you to maintain. This way the data is always in your hands even when its in mine.
Maybe because I'm in the echo chamber but it feels like everyone's looking for some sort of knowledge base system to use. Is this something only devs care about or is everyone on the planet trying to keep their thoughts on hand.