How does itfeel like living in America? (Cali, San DIego, Detroit, etc?)?

I live in Japan, raised in Japan, and spent almost every single day in my life. However, after I went to Hawaii and other places outside the country, I kind of realized that if you know Japan really well like me it kinda sucks living here, as far as the tasty foods (skittles, smoothies, burger king, Wendy's, etc), drinks (mountain dew, ginger ale, etc) and the lack of enthusiasm for sports which is popular in America. I've always wanted to spend my time in AMerica, and do boxing there. America is my dream, however to people who lived in AMerica for almost most of their lives, are satisfied of living in the States? Have you ever thought, "I want to live outside of the States."? If so, why?