Japan is fantastic, but I think there are some absurdly rigid social standards that would keep me from spending long periods of time there. I think it's easy to downplay these standards if you're someone who is generally "average," but the socially conservative attitudes are somewhat offputting to a westerner like me. The attitudes towards things like LGBTQ rights and tattoos are a good example.
Collectivism can produce incredible things, but a dose of individualism wouldn't hurt either.