If I write mispelling as supposed to misspelling why does it matter? The meaning still exists. Everyone knows what I meant to write. There is no ambiguity.
Why do some people consider the proper use so important? Isn't language flexible? Can't I use it as I wish?
I don't say these things to irritate or insult people, I'm saying them to convey meaning, meaning is achieved, so isn't the purpose of language in that instance satisfied?