However I have tested myself on a computer, and find I can easily do 50-60 wpm now because I don't have to worry so much about mistakes.
OMG, yeah. I learned how to type on old manual typewriters, without a delete key like the later Selectrics had. Hit the wrong key, and you had to backspace, get out the Liquid Paper (or other correction fluid) and wait 5 minutes for the damned stuff to dry before you dared smack your ribbon against it.
I mourn that today's children and young adults will never know the tactile pleasures of playing music or videos on equipment which makes pleasant snapping and whirring sounds at every command - or potentially losing a fingertip when the reel-to-reel is fast-forwarding through a 20 minute tape - but I sure do envy the word processor as a first typing experience.
OTOH, there is no computer keyboard ever made which feels as satisfying as a well-maintained IBM Selectric. My IBM Type M keyboards are the best I've ever felt (this is being typed on a 1984 Type M) but still don't feel as nice as Selectric III.
Among my obsolete skills, I can also use a sliderule, edit videotape with a razorblade, test a vacuum tube circuit for proper bias, and do a mean A-B roll edit on non-timecoded U-matic VTRs. And I was born in the 1970s! LOL