Why does the world hate the US?

Why does every other country hate the US? People say we are policing the world. If we don't then we would let extremists do the policing for us. People say that we into others business. If we don't then we get criticized for 'not taking affirmative action'. When England and Spain were attacked, why was it still the US taking blame for having a war? Indeed I say it was in the wrong place going into Iraq, but if you want to protect yourself, go ahead, we will leave you alone, and see what shambles the world turns into. We will leave the countries in Africa alone who depend on countries like the US to give aid and food. We will shut off our borders to not allow anyone else in, including those doctors from the Middle East and Eastern countries who seek to become some of the brightest minds in the world. Go ahead and blame us, but at least give me a reason.