I can type pretty fast on a full keyboard, so for me writing is slower. But because it is slower, I find it can be more thoughtful. About two years ago I started making an effort to hand write notes to help me think, learn, and remember things.
Pen and paper are also pretty great. You can take them anywhere. They don’t require electricity or a battery. They are small and lightweight. You can use them on a hike. You can use them if the power goes out. The format will never become unsupported.