I learned to "touch-type" (i.e. no look, although I never got real good at not looking at the numbers, and there was no num-pad on those, of course) before there were even electric typewriters. A different layout would mean I'd have to forget what I learned on.
Those manual typewriters were a bitch if your coordination was even a little off. The hammer keys would jam against each other and you had to stop and pull them apart. Sometimes it was a lot harder than others to do that, depending on which keys you pressed, how hard too. I hated that. Then, you had to deal with typewriter ribbon, changing it, you'd get the ink on your fingers. Every line change you had to do manually, swinging the carriage across. Even so, I liked typing. It was faster than using a pen once you got near 40 wpm.