Either you're going to base your endless rants on historical facts or you're just going to admit that anything can happen because of a wizard. Or a white walker, or whatever.

For the record, your rants are pretty stupid and a colossal waste of time. You're trying to apply your own sense of what "should" happen to a series that is entertainment. If you can't suspend your disbelief, fine. You can say that. You can say, "this movie is silly and stupid". But writing five page panegyrics that ignore the larger silliness is just absurd. It's like complaining about the plot holes in the Captain America movie without addressing the fact that nothing looked even remotely like it should have in the 1940s. And that's assuming that you're going to be able to suspend your disbelief about super powers to begin with. Everyone is going to draw the line in a different place, but it doesn't matter. No one cares. The world won't change. Movies won't change.

On the age of consent, it did exist in most countries in the later middle ages. Not only that, but people broke betrothals all the time. Look at the crowned heads of Europe and you will see infants betrothed to someone, but it rarely ends up being the person that the person marries. And although betrothals had some significance in the way that a letter of intent does in modern law, the free will of both parties to a marriage was generally recognized. There were of course exceptions, but the free will of the parties was expected to be expressed. So no, you're wrong on that if you're using the real world as a model. If this were England during the Wars of the Roses, the age of consent was 12, set by the Statute of Westminster from 1275. Marriage was to be entered into by the free will of both parties.

If Westeros has different laws, then my observations as well as yours are completely irrelevant.