Whatevs, Shakespeare.

Slobby wins.

I might pronounce it 'would've,' but I would never write 'would of.' You grew up saying, 'all the sudden,' so chances are, you would write, 'all the sudden.' My point with 'would of' is that people today are writing what they hear.

'All the sudden' is wrong, I don't care how low-rent you are.

Just because it's regional, doesn't mean it's OK. I've heard a lot of people say, "I would of..." instead of, "I would have..." - true, it might be regional thing, but I still like to know the CORRECT way of saying things so I don't sound like a moron.
As a well read (allegedly) individual, you surely can appreciate the fact that authors actually use editors to fix their regional dialect issues, so their poor English isn't passed along.

The OED says "all of a sudden" first appeared in 1681. This is 200 years before the sub-par author and poet, Kipling, was born. Try again, greed.

All of you idiots who think 'all the sudden' is correct, or should be correct, haven't read many books - or you have zero understanding of the English language. You can't just string together a bunch of words and assume people know what you're trying to say.
Are you the same group of people who say, "where you at?" and think it's correct?