I did take all my notes for university on pen and paper because I don’t have a laptop with a touchscreen and pen. But I was never quite happy, since I would lose some notes or not find something specific that I knew I wrote down somewhere. This semester I tried using Obsidian and I and it has been great so far. I am now able to search my notes by text and I can back them up somewhere safe. When I’m not on my laptop I take quick notes on my phone but the important ones will then later be transferred to Obsidian.