I don't doubt there are more or less justifiable reasons for the limitations of the US Military. (And I am not making any comparisons here, or suggesting that other countries do better - that would be a different discussion.) And I know there are balances to be made - sending in ground troops to carefully attack a specific target with low "collateral damage" is far more risky to your own personnel than just blasting the area with a missile. Training troops in local languages and customs may improve long-term situations, but it is also costly and time-consuming.
And I also understand there can be social, economic or political reasons for apparent inefficiencies in any large organisation.
Unfortunately, however, it all means that the US military have caused a great deal of trouble around the world, and regularly leave countries much worse off than when they started. You can take your pick on whom to blame - politicians, the defence industries, oil companies, the "bad guys", or whatever. And it's always hard to tell if the total situation would have been better or worse without any particular US military intervention. But the result is that the rest of the world (allies and enemies) fears the US military - not in the sense that they will be beaten in a war, but that the military action will break far more than it fixes, provoke more dangerous people and countries than it pacifies, and cost a vast amount of money in the process.