Do you keep a .txt file with all your notes/todos?

It might be an old-school habit (40 y/o here), but I keep a .txt file on my Mac with tons of snippets and references, e.g. useful git or shell commands, TypeScript/CSS reference, helpful ASCII characters, my daily TODOs, and more.

For technical stuff, I find it much faster than using janky apps like Evernote or Google Keep, so it never slows me down.

However, it's still not ideal - since my .txt file has become pretty large, I'm finding it hard to keep it up-to-date or organized, and it's getting harder to find things.

I've been thinking of building a better alternative that would also allow easy sharing/discovery/forking of technical notes from others (https://earlytap.com/get/gitnotes), but I'm still pondering whether this is an actual need shared by enough people.

Curious to hear: are any of you keeping .txt files with notes on your computer too? What do you use the .txt file for? Did you find any better alternatives?