I type 80 WPM / 400 CPM, so that means I can write about 2,400 lines (of 80 characters/each) in a work day if I don't take any breaks!
But seriously, I like the comment that was made earlier about negative lines of code. That says it all, IMO. I do as much writing as I do deleting and refactoring.
I love to delete code, especially other people's ugly-ass spaghetti grossness, and unfortunately, sometimes my own ("what was I thinking?!")