It's a signaling mechanism more than anything, as you can see from the other responses here.
"I can touch type" == "I spend enough time writing things on the computer every day that I have invested in the fluidity and comfort of my own hands" == "I'm enough of a nerd to actually be good at my job".
But it's also worth it from an ergonomics standpoint. I learned to touch type over the space of a few weeks of practice, meant years ago, and it's the reason I can use a split ortho keyboard today, which is much nicer on my wrists than the alternatives. I can also keep a notebook between the two keyboard halves which is much nicer to scribble on than having it to the side somewhere.
"I can touch type" == "I spend enough time writing things on the computer every day that I have invested in the fluidity and comfort of my own hands" == "I'm enough of a nerd to actually be good at my job".
But it's also worth it from an ergonomics standpoint. I learned to touch type over the space of a few weeks of practice, meant years ago, and it's the reason I can use a split ortho keyboard today, which is much nicer on my wrists than the alternatives. I can also keep a notebook between the two keyboard halves which is much nicer to scribble on than having it to the side somewhere.