I've seen the #Microsoft #OneNote hype and warned the users of long-term lock-in effects. Then OneNote failed and people lost (parts of) their data.
I've seen the #Evernote hype and it happened again.
Now, I see the #Obsidian hype. (At least the file format is an open one.)
🤷
https://karl-voit.at/2021/01/18/tool-choices/
If you want to spare yourself some effort, think of starting with a solution with no lock-in: https://karl-voit.at/orgmode/
@publicvoit +1 in general. I believe your recommendation is phrased wrong, though.
Emacs and org-mode lock you in just like Markdown + Obsidian do.
It's waaaaaay less likely you'll be screwed, though, because Emacs is free software.
But that's not the same argument.
While Emacs is maintained, you can get the editor to run on your operating system. If by chance it dies off, you can tweak the source yourself, but for regular Jane and Joe that's the same as company goes bancrupt.
@ctietze @publicvoit Yeah, putting time, energy, and content in Org-mode via Emacs is totally a form of lock in. It's maybe more benevolent than other kinds of lock-in, but you're still "stuck" with Emacs and some specifically-formatted "plain?" text .org files.
I happen to love and prefer Emacs and those weird .org files, though! 😆
But really, if any of them went away, I'd just take a few days and move to something else. It would hurt, but ¯\_(ツ)_/¯.
Karl Voit 
Christian Tietze
Jack Baty