As on one hand our OP is maybe correct, why should the US government spend a dime on the mid-east and just let those squabbling idiots solve it on their own.
On the other hand, our OP's strategy is the strategy of an Ostrich. Stick your head into a hole in the ground and put ear plugs in your ears. In short it does not make the problems go away, especially since bad US foreign policy of the past has made mid-east problems far worse.
As for me, as a early baby boomer, I have lived most of my life under the threat of Russian nuclear annialtion with its Mutual assured destruction doctrine. And I have also spent most of my life under the fact that the entire mid-east is an explosive tinder box most likely to ignite a hypothetical WW3 that could well go nuclear.
The Russian threat is very much abated post 1990, but the mid-east is more unstable and volitile than at any time in my life.
So I pay attention to mid-east issues that are bound to profoundly affect my future. And sad to say, OP, the more I know the more it sickens me and scares the hell out of me to follow mid-east issues.