Only thing I can figure is that we support the middle east countries by having to buy their oil. What would they do to support themselves if we used our own oil. So to keep peace in the world we let them rip us off.
I think it's even simpler than that. We like cheap oil. It's cheaper to buy it from Saudi & Co than to produce it from, say, local shale. So we (the West, to include me, but I mean mostly the US
) try to keep the peace lid on the Middle East because if it goes crazy there, we'd have to pay $200/barrel or whatever for oil, which would be economically inconvenient.
Oh, and of course the US has to protect Israel whatever the cost, and due to a huge blunder by Moses who turned left instead of right, Israel doesn't have the oil revenues. (Aside: I've never really understood why the US has to be so protective of Israel; everyone says "it's the Jewish lobby", but how important can that be, how many Jews are there in the US, when there's only 15 million worldwide? There's also the truism that Israel is the only democracy in the region, but since the US is, or has been, propping up half the dictators, that's somewhat circular reasoning, I'd have thought.)
A more general question is: if the defence of Western (read: American) freedoms requires the installation of dictators who deny those same freedoms to their own people, can this be justified? Back in the Cold War days it was easier to defend the "Yes, but he's
our sonofabitch" argument. These days: not so much(*).
(*) Did Sacha Baron Cohen know what he'd be starting when he used that line? I hear and read it everywhere these days.