I used a bulletjournal for one year. It's very nice and has something zen-like to sit down and write on paper with a nice pen, but in the end I spent too much time maintaining the system. I tried to come up with cool spreads for tracking movies I want to watch, money I borrowed to people, credit card balances over time visualized and and and, but most of these spreads became annoying to update and drifted into being not complete, or I started dreading having to update it every month.

I also didn't like creating the monthly spread at the beginning of each month. Yes the point is that you get an overview of what's actually going on, but the more often I did it, the more often I didn't want to do it. It also meant that my bulletjournal monthly spread had to be kept in sync with my digital calendar which I needed for nagging me about events. Actual future planning was another restriction that was very difficult to get around. The yearly view works ok-ish, some other more complex systems were too much for me to try.

After a while, despite me really wanting to use my system, it just wasn't convenient. I spent too much time adding data into it, couldn't immediately jot things down when I was on the go, still had to use an app, and had more weight in my bag. I didn't like the feeling when I knew I forgot to write things down and my daily spread being incomplete. It was also pretty restrictive in what I could actually do given that it's just paper and ink.

I am bouncing between different setups these days but have been with Things 3 and a GTD-ish kind of approach now. I am now and then grabbing my BuJo though and still want to give it another proper go at some point. A completely digital version with a free-form ish text based editor similar to taskpaper or agenda would be very appealing!