[MattRix]

I used centralized cloud sync notes (Notion) because it works well across all my devices and I have to spend zero time maintaining it or otherwise managing it, it just works (and improves over time without me doing anything!). I am not worried about if the service ever shuts down, because I always have exports/backups of my notes and can always roll my own service if needed. There's really no downside to it.

[darkkindness]

I've been trying to get into Notion, but the biggest downside is that I can't edit the markdown source of my documents nor can I use my own editor to edit their documents. I'm not happy with Notion's editor -- for instance, unindenting item 2 out of 5 of a bulleted list will move it down to item 5 for some reason. I guess I could export documents to markdown, edit, and reupload, but at that point I'm just using Notion as cloud data storage.

edit: Didn't mean to criticize so much! I've found Notion is great for taking nice plain text notes on the go that I can instantly access on my other devices. In the past I achieved this with Syncthing, but Notion's syncing is much less finicky, and fast -- it takes less than a second to sync! Plus there's a share menu.