[NonNefarious]

I used Evernote for a while, and then (if I remember correctly) they changed their terms, and I said nope. Right around that time, Apple finally pulled its head out of its ass and added groups or categories to Notes, making it viable.

Now I have everything in Notes, synced through iCloud.

Apple Notes doesn't use any standard format, but you can export your notes. Otherwise, I'd be way into an open-source, self-hosted solution.