Princess Camilla

So Charles is marrying Camilla. Good for them both. Unlike Paul Burrell (see here), I do not see why Charles cannot be King and marry Camilla. This is not 1936, but 2004 if he hadn't noticed. It's not as if divorce and remarriage is exactly taboo, and one reason the monarchy has survived for as long as it has is the simple fact that it's changed with the times. And I don't recall Henry VIII having to abdicate when he divorced at least two of his wives...