If you can type without pain and without editing, that might make sense.
If you are writing stream-of-consciousness, too, that might make sense.
If you are writing from several sources, comparing them, etc. it helps to be able to check your sources, compare them, correct errors, etc. as you write.
If you have arm or hand issues, it would help to be able to use speech-to-text software, but it will take years of development, recognition of dialect differences, better dictionaries with more words, tolerance for speech differences, and freedom from noise bombardment.