Hopefully it's not exploited too much, but yes Taiwan is basically perfect place to live with reasonable comfort on the cheap.
I don't think you mentioned gyms. The Taiwanese are an oddly sports-oriented people. Throughout asia I can't think of an equal in terms of availability of cheap gyms. Public sports complexes are also sometimes good enough (but I've also found myself working out in a cramped room with a bunch of senior citizens on occasion :)).
I think you also didn't mention proximity to other countries for visiting. It's a very good location, and EVA is one of my favorite airlines.
Edit: Note that the things that make Taiwan great for living also, almost by default make it a "boring" country to some types of people. #1 for remote work possibly, definitely not #1 for thrill seeking, nightlife-type interests.