I checked out Roam (thanks for the rec!) and though I REALLY love the concept, I'm a little nervous to keep a massive interconnected knowledge base with a SaaS. Currently, I use Devonthink and though it's not perfect, I'm just so relieved I can have data on my machine with the storage system I choose. I miss the days of software storing data on my computer or where I want.

As a backend engineer, I just think: "Man, this data is just sitting in a db somewhere for any engineer to grep." Until we get to a point where everything is just encrypted by default, I just can't see myself trusting software like this.