I checked almost that whole list. A few especially though, when compared to where I live now (Seattle, WA) Yes, I don't live in Japan, but I have been there twice, soon to be three times.
Reliable Trains - Here, you either sit in gridlock or ride buses that are consistently up to 15 minutes late.
Mild and dry seasons, distinct seasons - The temperatures in Tokyo would be perfect for me almost the year round. Even the temperatures in January are not cold for me, and post-tsuyu summer is a little hot for my taste, but tolerable. Compare that to Seattle weather, where total and utter crap is too kind for describing its weather about 7-8 months of the year.
Now for the not so Seattle-centric stuff.
Also, there is just so much more fun stuff to do there. Whenever I have been there on vacation, I was in my hotel room to sleep, shower, and not much else. I was out in the city about 15 hours a day, compared to here, where the nightlife doesn't interest me at all. Japan you have awesome pachinko parlors, karaoke, and game centers to go to... here, the nightlife just doesn't interest me at all.
Japanese TV... I am just a total ****** for it, especially the completely wacky shows (i.e. Human Tetris). Unlike American TV seems like nothing but dramas and reality shows.
Politics... here in the US, just eww. I think Bush is one of the worst presidents in history, and I am so sick of turning on the radio and hearing how one or the other candidate is corrupt in some way. The economy is in the toilet too. In my Japanese history class, we learned a term called "amerika-byou" (American sickness). I can see why it was invented.
Also, just so advanced in technology. There, technology develops in really cool and useful ways (i.e. toilets with remote controls, human-esque robots, etc.). Here in the US we use technology for stuff like making shoddy operating systems, anti-piracy measures (*cough* DRM *cough*), and basically being Big Brother.
I could go on and on, but my post would be as long as a dissertation. Really, really hope I can move to Japan someday. So much there appeals to me, while here things have been going downhill since 2003.