It is true that many others do not like the US... at least the fact that the US is the last remaining superpower and leads the world in technology and economy. I would venture to say that ANY country in this position would face some sort of resentment and criticism from the rest of the world. Yes the US does carry tremendous influence (due to the above factors) around the world and that is another source of complaint.
But I think everyone should keep in mind that WHAT the US advocates is freedom and free markets economies and democratic societies. The fact that 'Western' stores in Iran can't keep up with the demand is NOT due to US bullying their way in. Its Supply and Demand - the people like/want it. The fact that Arab countries aligned with the US hold elections is NOT sticking our necks into affairs that don't concern us - they are basic human rights. The world could be speaking Russian were it not for the US and its allies cooperating to dislodge the USSR. Today though we have the luxury to say in retrospect that this was "sticking our heads in other people's business". Let me just say that if you were around when Communism threatened to encapsulate the world, you would have no compunction against those who were trying to prevent it.
Now the 'world' opinion is for the most part with the US. There are some notable, vocal opposes, but there is a significant contingent that agree that Saddam and other Despots should not be allowed to threaten humanity.
This being said though......"The World" community DID NOTHING for the past 12 years to dissuade Iraq from furthering his adgenda. What makes anyone think that further apathy toward Iraq will achieve any results in Iraq or elsewhere? There is tremendous outcry from a vocal few who clammor for continued inspections. EVERYONE in the world community has been content to let Saddam go his merry way before now. The fact that there are inspectors even in the country are due ENTIRELY to the threat of the US and UK.
Some think the US is sticking its head where it doesn't belong when it comes to the Mid east. Perhaps this is true. Why? Because Muslim countries want to "drive Israel" into the sea. They want to exterminate a whole race of people due to religious intolerance. The US has been pivotal in preventing this from happeneing. Lets not forget people that the reason Israel had to establish a state in the Mideast to begin with is because "the world community" would not accept jewish refugees into their countries after WW2. Muslim countries biggest beef with the US is their support for Israel. Yes without this support Irael could fall more easily to them. Iraq would love to lead that charge too. It seems that many in peace advocates would be content to let that happen.
I think many of those who are willing to let things slide in Iraq would be future victims and conquests were it not for the US/UK and other allies making the tough decisions for them.
Everone wants peace. Sometimes it means forcibly apprehending criminals like Saddam. Oh, and BTW the Drudge report had an good article about an interview with a recent Iraqi defector. He contends that the Iraqi populace is welcoming this war! In his words "we (Iraqi people) are victims of all of this too"