Why do New Yorkers hate New Jersey?

I have lived in New Jersey, New York, Nor-Cal and So-Cal.. I will never understand why people hate places they haven't really experienced. People from New York judge Jersey from the turnpike (there are a lot of nice parts of NJ I promise you). Living in all these different places I've learned that people from everywhere in the United States think that their state or region is somehow better than all the others. People from So-Cal and New York are especially arrogant. People need to get over themselves and realize that a state or county line really doesn't separate a cl of people. When you go from Hoboken to Manhattan do you feel like you are in a different country? Nope.. if you do.. you haven't traveled enough. The fact is that most places like NY and NJ that seem to have an arrogance toward each other basically are the same place in that they could not survive without each other (though they think they could). I suggest really traveling.. there are cool people everywhere.