What makes this product exceptional is the way it allows to link notes: Deliberately by surrounding words by doulbe brackets or automatically by linking notes that have the same keyword in them.
I started migrating my journal entries (date stamped) and my markdown notes into it, and I start to see connections among the notes that I did not make intentionally.
Slowly I start to come up with more and more categories for note taking that I want to do in Roam: Dream journal, reading notes, articles, research.
Before I was using Bear, Ulysses, Evernote, later I started using Emacs/org, now with a small detour settled with Roam.