Actually QWERTY was created to slow typists down. Back in ye olde days, when typewriters were still around, there was the problem where people who typed to fast would jam the typewriters. Thus, QWERTY was invented to slow people down so the typewriters wouldn't jam. Then, when computers came along, everybody knew QWERTY, so they continued using it.
That's an apocryphal story, though. QWERTY was said to have been invented, actually, to make it easier for typewriter salesmen to type "TYPEWRITER", all from the top row.
