Many writing articles advise getting away from your computer to write.
I even watched a movie recently (“I Capture the Castle” – which I loved, by the way) that suggested writing needed to take place away from the computer screen.
I do this, sometimes. In journals, notebooks, scraps of paper or corners of napkins. But I also write at my computer, and I am enormously grateful for the ability to neatly wipe away words, to cut and paste without scissors or glue, and to save in multiple places so that I don’t lose my notes.
My computer also allows me to post this, here.
I can’t imagine not writing on it.