Naw. The definition of a necessary being is one that has always been, it is uncaused. A necessary being is necessary for atheists and theists alike. It's just a different being depending on what you believe. For theists, it's God. For most atheists, it would be matter. For me, it could be absolutely anything whatsoever. We have absolutely no real clue what is outside our universe, so the thing that caused our universe to exist could be... anything. If our universe was a ripple in a pond, that ripple could have been caused by a god like being deliberately making a splash, or it could have been caused by an acorn falling off a tree, or a drop of water raining from the sky. The ripple doesn't know, can't know, doesn't really need to know what created it. All it knows is to spread outwards, that's all it can do.* But if it were to speculate as to what created it, well it could be absolutely anything. I believe we are in that situation. *like the ripple only knows to spread outwards, all we know is the laws of physics in our universe. So really, in my opinion, to believe a god created the universe is like entering a bet when the odds of winning are one in infinity. Yep, all my point was, was that there has to be an uncaused being. Without it, anything is impossible.