Sirakwai wrote:
Beetle nut chewing men with red mouths and rotten teeth speaking Taiwanese and spitting on the burning tarmac.
[snip]
If there is any beauty to be found on this ravaged island it is that part which is exempt from any significant Taiwanese population.
These two sentences are simply bigotry on your part.
Yes, many parts of Taiwan (especially down in the industrial south) are pretty grim. Things are a mess because of bad laws , weak institutions, class prejudice, unfair budgets, and rampant over-development. Now many Taiwanese, especially local leaders, bear some responsibility for this state of affairs although most of the responsibility lies squarely on the shoulders of the KMT and its horrible government for most of the last 50 years.
Perhaps your wife and her family have not travelled overseas extensively. Perhaps they know all this and don't need to hear you complaining about it all the time. Perhaps they care more about people and relationships and don't see the things you see.
The countryside around Meinong is reasonably pretty, and the rift valley in the east isn't bad either. A lot of what you ar describing is thankfully concentrated in Taiwan's truly awful towns. Rent a scooter or bring a bicycle and ride away from them. Maybe you'll find something nicer.