That's great I'm glad you see only happy shiny people!
Despite what many on the flob seem to believe, there is a lot more to Taiwan then Taipei, Koushuing and Taichung. Taipei is not a good representation of the rest of Taiwan. In fact in many respects it's a different culture entirely.
Yes, It's all relative, compared to London maybe your area has a lot more people that are willing to smile. Compared to China, Taiwan is also much better in this respect. Compared to most all the places in the world I've lived in or traveled to, it's much worse. It all depends on the comparison I guess. I notice a HUGE difference in the people whenever I travel to Taipei, not only do more people smile but they are willing/able to speak English. This starts the moment I get on the HSR. A completely different group of people.
Not all of us can, or choose to live in Taipei, and Taipei is NOT the same as the rest of Taiwan.
I have some good neighbors. The folks across the hall have brought me fruit many many times, and could be considered good semi-friendly people. In more than four years of living in this apartment I have never once been able to get a smile out of them. This doesn't change the fact that I have and always will greet them with a smile. I never once said, or felt that they are bad people, quite the opposite actually, but something about the culture here forbids or discourages them from ever smiling. I don't know if they are truly happy or not, they may be quite happy and just following the society norms. Regardless, I don't lose a thing by greeting them with a warm smile. If I had seen a smile instead of all the fruit I have been given through the years, I would think Taiwan was the land of smiles.
Instead I think Taiwan is the land of fruit. The abundance, variety and the quality is beyond anything I've seen, and it's always a good gift.