Do we need a $135 Million Dollar Fighter?

Who are we going to fight that is so menacing that we need such an expensive fighter? Russia, China, India, Bangladesh? Would China lend us a Trillion dollars a year if they wanted to defeat us? All they have to do is stop lending us money and we are done. Russia, India and others have no means to take over our nation and the funds to even try it. So, why do we need a vertical take off, short range ground attack fighter? Who are we going to attack? Mexico, Canada, Cuba, Trinidad, again? What drives us to such crazy things yet, a growing number of Americans say they do not believe Global Warming is real! The obvious is too painful to admit. MikeSar