I used to write everything by hand, and had problems with my hand not keeping up with my brain, but the biggest problem came with the fact that I've never typed any of it. Shelves of composition notebooks, folders with papers, notes on napkins, and nothing ever typed out.
I'm thinking I should find time to do that, and maybe have a book of short stories to put together. Completely unrelated stories, but still.
both methods have their pluses. a had-writen first draft is often more spiritually rewarding--and if the power grid goes down, you have a hard copy.