The people who benefit most from monetary inflation are those with large amounts of debt, not those with large amounts of cash. The middle class has the highest debt-to-cash ratio, so they benefit the most.<p>However, the point is moot because there has not been significant monetary inflation. Only asset prices have really risen in response to quantitative easing (perhaps this is why you said it only helps wall street); this is a somewhat intuitively obvious result since the fed is buying assets, not printing money.