I spent 3 years living outside the US in the Caribbean and Europe. And I can say unequivocally that the disdain I was exposed to was much greater than the gratitude. By a very large margin. I experienced many many instances of out and out hatred, with even greater numbers of passive-aggressive irritability. I can't say even once I heard a good thing about American involvement in the rest of the world. Not once.I've been around the world and the United States is not despised as much as those pundits who argue the point would have you believe. It's very popular to televise American effigy and flag burning; much more so than the incredible amount of good things that we do, buildings we raise, lives we save, mouths we feed, medicines we distribute, etc...
I've been welcomed with open arms and bottles of champange (literally) by those who felt the good that American's do in both humanitarian aid and in combating those who kill and opress the weak. I'm a Marine who wears both a Humanitarian Service Medal AND a Combat Action Ribbon... I know first hand both sides of our efforts in this regard.
Certainly the force we have used and continue to use against the likes of the Taliban and others are not without equal and opposite reactions amongst those involved in or assocated with those enemies. I'm sure the brother of a Taliban fighter hates Americans because we killed his kin. I'm positive that Saddam and his army didn't care for us. Personally, I think having killers, dictators, terrorists, tyrants and their minions as enemies is the way it ought to be...
I'll concede that we spend a ton of money on defense to support all of these actions and more. I'd rather we didn't, but using the argument that we have to stop killing killers or they will hate us is just silly justification for it. More than anything, I'd like to see every single one of our Soldiers, Sailors, Airmen and Marines come home without a scratch, but their cause is just and their actions and intentions are true.
There are all kinds of reasons to argue against American foreign policy, but the trend to blame some imaginary worldwide hatred that we caused on it is IMHO, a non-starter.
Of course... that's just my opinion though. I could be wrong.
Of course, let us pull out of all those places and when they degenerate into chaos, that'll be our fault, too.
I agree that we should limit our involvement in the rest of the world's politics... but what do we do when Iran nukes one of our allies (Israel)? At that point, do we still sit back and say, "Hey, it's not our fight, man."
I don't know the answer. But while I don't think the entire world hates us rabidly, I can speak from personal experience about negative American sentiment abroad, and I can also say that a large amount of that came from poor experiences with American tourists who thought they should be treated better, just because they were American. Again, personal experience, here.
Keep in mind, when you travel abroad, EVERYONE is watching you, BECAUSE you're American... try to behave as you would if your grandmother were with you all the time.