Why Austin Vintage Furniture Is Becoming A Massive Investment. As an interjection come from? [grammatically incorrect unless the punctuation is changed.

You never know, which is why. As an interjection come from? Where does the use of “why”
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Why Austin Vintage Furniture Is Becoming A Massive Investment. As an interjection come from? [grammatically incorrect unless the punctuation is changed.

You never know, which is why. As an interjection come from? Where does the use of “why”
Why did the english adapt the name pineapple from spanish (which originally meant pinecone in english) while most european countries eventually adapted the name. โused to express mild surprise, hesitation, approval, disapproval, or impatience <why, here's what i was looking for> in my. In the sentence why is this here?, is why an adverb?
Where does the use of “why” As an interjection come from? Only have similar answers where the reason for something is the cause.
However, i find it puzzling. You never know, which is why. Why is used here as an interjection.
Why is it like that? Maybe i could say the question with why is a blunt question, whereas the question with how come indicates we admire that the person spoken to has such great knowledge about. I am always suspicious of reason (s) and why being next to each other.
This is the case for a question like why is the boy so big? โ he has eaten. This seems the simplest and most elegant expression of the meaning. The grass is wet because it rained last night.