I write my first drafts by hand. It is slow, my handwriting is terrible, and I have to type everything again afterwards. I would not do it any other way.
Writing by hand forces a sentence to be finished in the head before it reaches the paper. There is no deleting, only crossing out, and the crossings out stay visible: a record of how the thought changed its mind.
Try it for a week: a notebook, a pen you like, ten minutes a day. You may find that you think differently when you cannot type.