Why buy gold? Seemingly it's price is linked to USA public debt, that's why.

I recently read an article that showed a correlation over the years of the gold price and American public debt. Now with American debt at over $16 trillion dollars, they are at the debt ceiling whereby they can't borrow any more money until the debt ceiling is shifted again. So will they have to move it, they will if they want to spend more cash. So will the price of gold increase? It probably will if this direct correlation that you can see here continues, unless of course you think that America will be able to keep it's borrowing at the current levels. I'm not so sure, that's why I'm buying gold and gold stocks.