I wish I could journal straight into a directory, but I've found that it's crucial to have mobile access to my notes. That's why I mainly now write everything in Google Docs since it's simple and convenient (I tried Notion but was not a fan for various reasons I won't get into it).
The only issue with Docs though is there's no Vim support of course, which has annoyed me for a while. I finally got around to building an extension for it though if anyone is interested: https://chrome.google.com/webstore/detail/vim-for-google-doc...