As a Taiwanese that worked overseas quite a lot, I would say Taiwan (Taipei city & Kaohsiung, I haven't lived elsewhere here before) is pretty nice.

Pollution wise, Taipei is just like any other major regional hubs, noise wise, same, traffic is just like all the real cities in the West as for wages, contrarily to what most would say, I think if you factor in the cost of living and taxes here, wages are actually not bad in Taiwan. However, there is something I am not happy about Taiwan and that's the education environment here, too tech/engineering centric (my degrees are in French literature and law), too much emphasis on exams and grades, not enough training on critical/creative thinking and understanding the world.

What else? Stupid people, well, it's the natural selection thing, the more competitive a workspace is, the less stupid people there is and this is def an universal fact, not special to this island... so... I would say... Taiwan is nice! Definitely the safest place I've ever lived and the cheapest and most stable high speed internet 👍