I like Tokyo, it's the closest city we have to an actual physical representation of the Los Angeles in Blade Runner, which fascinated me as a small child and continues to do so. I'm a sucker for ridiculously large cities with massive skyscrapers and bright lights, regardless of the country it's in. New York, Paris, and London are great, but Tokyo takes it to eleven.
I don't think Japan is better than America, nor would I want to live there. It's just a cool place to visit, much like many other countries and cities.