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Bin Laden was hiding in Pakistan, which is next to Afghanistan. Yeah, he was from Saudi Arabia, but if he's not at home, do you wait for him to move back to his old home or do you look for his new home? What resources are we getting in Afghanistan currently?

Bin Laden and the Taliban were based in Afghanistan. The Soviets and the U.S. had a proxy war in Afghanistan for years. The U.S.nadvertently helped create Bin Laden's Taliban in order to fight Soviets. But, I blame the Soviets because they overthrew the Afghanistan leader and invaded the country in the first place.

U.S. is not going to war with "ally" Saudi Arabia. The U.S. helped a few rich Saudis including some Bin Ladens to flyout of the country days after 9/11.
https://www.vanityfair.com/news/2003/10/saving-the-saudis-200310

Overall, there is no real profit. Wars cost billions (sometimes trillions) paid by taxpayers. True, the well-connected get rich like Cheney and associates who made billions by billing the American taxpayer. But, it's better to avoid war and lower taxes or use the money to benefit society like fix infrastructure, build affordable housing, help veterans, etc. Former President Eisenhower warned against the Military–industrial complex. I agree with him.

If the US was pushed out of Vietnam and Vietnam fell under a Communist regime shortly there after, I'm trying to find out how we profited. Did the US profit from that war? I know some Civil War ancestors too. Did the US profit from that war too?