You get lauded by the media as a hero for bombing arabs from the sky with zero possibility of defeat (and if the devastating horror inflected on the civilian population is revealed you get to throw the leakers in a dungeon - see Assange).
All the while transferring a huge chunk of taxpayer money to your chums by giving them lucrative defence contract to wage these pointless wars that do nothing strategically but extend the US debt to astronomical levels (which the entire world must finance due to the dollar hegemony), then in turn your chums reward you with board positions and various other kickbacks (book deals and university, think tank and media jobs).
You face zero possibility of being held accountable for your decisions because while politicians come and go your unelected position is secure and the population scarcely pays attention to foreign policy or public debt.