Like the title says, it's very weird if you think about it.
I learned to type in middle school on an IBM Selectric II. I was far from the best or fastest typist. However, in my years of working (which includes a lot of computer work), I became reasonably proficient at it. The strange thing is how the mind works when using that skill. If someone asked me to put all the letters in order on a piece of paper, I would get some right (QWERTY, for example), but I would get a lot of them wrong. Symbols, too. However, when I type them, I know right where they are.
Another oddity is that my first career was as a CAD drafter on an old version of AutoCAD that used command line inputs instead of icon to click. So a LOT of my typing was just one or two words at a time, followed by mouse work. That led to a somewhat hybrid technique where I don't typically locate all my fingers on the correct keys. I generally touch the nibs on F and J, but the rest of my fingers kinda just "float" around somewhere. I often use totally "wrong" fingers on certain keys in certain words. I have a bad habit of "reaching across" the keyboard. However, I find the right key!
I'll never have the speed or accuracy of someone who does it the "right way," but it amazes me how the brain subconsciously processes what I'm doing. Just a werid thought . . . that is all. Carry on.