A little story about how the QWERTY keyboard came about.
The first keyboard was created by Christoper Scholes in 1873 to improve caligraphy. However, if a person typed too quickly the keys got stuck and the machine stopped working. The answer... QWERTY, developed by Scholes to slow you down when you type!
So why do we all use it? Well, some years later Remington - who were sewing machine manufactures at the time - used the QWERTY keyboard for the first typewriters, so as to appeal to existing users of Scholes machine. More people were forced to learn that particular system, and more companies began manufacturing those keyboards until it became the only availabe model.