I still love America, and all the hate we receive from others is just more proof that America is a special place. It's only natural. Everyone hates the good guy, right? The guy who ends up as the Homecoming King, and bangs the Homecoming Queen? It's only natural to hate that guy, especially when he picks you up and dusts you off after chasing away some bullies. Is it any wonder some people hate America so effortlessly?
Eh, not really. The USA definitely has a historical significance, but now it's more like a regular, albeit large nation, slowly declining in influence and importance. It's the same position that used to be held by the British Empire pre-WW2, and although the UK might still hold a modicum of cultural cachet, it's for the most part just a regular country that no-one cares about.
I wouldn't really call the USA the "good guy" either. Fighting the Nazis was good and all, but there was a 50/50 chance of getting that right, and by that token you have to call Russia the good guy as well. Again, the USA basically succeeded the British Empire as the global bully, meddling in other countries affairs for political or economic gain with complete disregard for international law or the welfare of human beings - including its own citizens.
I mean, supposing we put aside all the stuff that could
potentially be written off as part of the times, like the genocide and degradation of the native American population, slavery, witchhunts and executions, racial segregation, etc. then the USA has still has a pretty scummy record, for a long time now. You've got the incessant meddling of the Roosevelt Corollary into Latin America to protect or advance US economic interests, the Banana Wars, the funding, training and support for multiple terrorist/rebel groups throughout the Cold War (the Contras and the Mujahideen being the most notable examples), and the never-ending Middle East meddling in general, which tends to backfire every single time (the aforementioned indirect funding/training of al-Qaeda and the support for Saddam Hussein's coup of Iraq don't seem like such great ideas in hindsight). I could go on, but it would take forever.
That's why people look on the USA with mild disdain (no-one actually "hates" the US, besides fanatical jihadists); it's not because you're special. There's nothing really special about the USA anymore. Europe has more history and culture, Scandinavia and Asia have faster Internet, places like Singapore and Hong Kong make Manhattan look like Detroit, basically everywhere has better public transport and rail systems including the developing world, the EU economy is larger than the US's and most Europeans have a better standard of living than the typical American, the USA has more crime than the majority of the developed world, more homelessness, and more convicts, you have worse health, more obesity and lower life expectancy than the rest of the developed world, etc., etc.