I use Dvorak. I typed around 70 wpm in Qwerty, and now I’m up to around 95 wpm in Dvorak. Was it worth it? I dunno. I got up to a good speed (like 30 wpm) in like a month, but it took a good couple of years to reach my current speed. The problem is that I switched from being a programmer to teaching programming, so now I have a bit of trouble every time I try to show my students something on their computers. No way I’m switching back to Qwerty, but I’m not sure if the switch was really worth it. If I were an author, a secretary, someone who actually typed fast all day long it’d probably be worth it, but not for what I actually do.