I've found that if you're drafting something important (i.e., not transactional communication), the extra delay of handwriting enables you to edit your thoughts

I've found that if you're drafting something important (i.e., not transactional communication), the extra delay of handwriting enables you to edit your thoughts more effectively, more than writing something fast and then editing it on the computer. Whether this advantage justifies the extra time taken to compose the text depends on the writer. Many proflific writers still use pencil and paper to compose their manuscripts.