There's a lot of comments about how digital devices are viable/helpful for note-taking and just as good as a pen. I think that's missing the crucial point: virtually every device we own today is designed as a distraction machine.
A pen + paper isn't going have any notifications or reminders or updates or emails or texts or ads or alarms or alerts. If there's any device without those that's as reliable and as cheap as a notebook, I've never heard of it.