Why people hate America so much, but....?

many countries, especially Moslem and the Third World (sorry), they hate America deep inside until their bones, many even cursed and said many unproper words about America, but..when The Emby of America threw a Free Lottery for Green Cards or Free Visa to Visit, or something that can go to America very easy, ..there will be about 10 Km long line of people are lining up just to get a Visa to America, this is also happen in my country, they say many bad things about America, even wanted to close down McD, KFC and A&W....I also can see that when disasters happen, they always seek help from America without any shame, and they also put away some of their salaries to buy US Dollar for saving, I just do not get it...I do need a real honest answer from the heart and please no harsh words.Thank you...