I learned 10 finger typing when I was 8 in school (42 years ago), and have been glued to computer since then ; if I write something, or even sign something, it is complete gibberish, even to myself. To me it looks like those last stages of dementia scribbling, but I know that's not it because it was like this since I was 12 or so; my teachers couldn't read my writing and it affected my grades.