From time to time, I do spell words differently - always intentionally - particularly to emphasize the specific phonetics.
Such as the word 'cuz', which I use regularly . . .
I prefer cuz to 'cause (as in because) . . . in my mind, they are the same word, only pronounced slightly differently, and if someone is reading my work, I want them to hear it the way I would say it. And I don't say 'cause' with an open 'ah', I say 'cuz', emphasis on the 'uuh'.
However - I am with Delrica . . . know eye-dea y u wood use the wrong word if it sounds the same. Perhaps because we are an eccentric bunch.
I do, however, LOVE to make up new words - particularly brand spankin' new curse words - after all, isn't that what my poetic license is for?