First, it is very hot and humid, like a sauna. I constantly find myself getting away to cold countries during the winter to soak up the cold before returning. I lived in New Zealand, south island and I loved the cold. It was constantly below zero during winter and in the summer, it is dry and hits around 30 degrees noon time but dips to 16 degrees at night. It's nice. Your complexion improves, you don't get pimples, and you feel like walking, hiking, running because you don't face the piercing sun that damages your skin and you don't have that energy sapping heat.
Second, it is too small. I can't get away to the country side over the weekends without going through the uncertainty of a big jam at the causeway. A jam can easily burn 2 - 3 hours out of my precious weekend. Worse, JB is not safe. I almost got car jacked once, got threatened by a thug twice who then scratched my car. Worst of all, I got stopped by the police more than 5 times wanting to fine me but yet refusing to issue me a ticket.
In a cold climate, you can dress up in a nice coat, wear a turtle neck, wear nice boots without sweating like a pig. Ladies can put on more makeup without fearing it running. I could down a bottle of sake and feel the internal heat while walking outside.
It was around -1 degrees in Kyoto at night, around 4 degrees in Osaka and was 7 degrees in Tokyo. I love every minute of it.
