Best thing. I was all over the place before Obsidian, Trello, Docs, Drive, etc.
I don't want sync. I sit on my laptop and do shit. All local, with regular manual backups to a USB stick.

Markdown is love 💓

Tags, date and time inserts, tables, latex, custom colors for bold and italic with css, code blocks, live embeds from other notes is a killer feature ![[some-note#some-heading]], voice notes; click record and blabber; they get embedded in the note, callouts to highlight stuff, ...

Started for side projects, then slowly moved everything there. Work, diary, and study.