Buying on margin for longterm dividend intesting?

Buying on margin for longterm dividend intesting?
Added (1). When buying a house one of the benefits is buying with leverage. Why not buy on margin with a stock I hold YYY which yields 10% and can collect the extra dividends to cover the loan? I don't care about the stock price, I'm just interested in using leverage like buying a rental property to help pay off the mortgage then owning it when it's paid off.

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