You're a lovely guy John, but I wish you wouldn't write Of instead of Have!! or even 've! Drives me nuts. Or is it some text shorthand I ofent caught up with yet!!
It's a very common grammatical mistake that's been around for decades. I've caught myself saying it. It's just one of these things that occurs in informal speech, something which all languages have.
Then there's the whole issue of tennis players using adjectives as adverbs - I played fantastic, he played brilliant, she played unbelievable etc etc
THAT really annoys me.