Pro: Taiwan is overall a very convenient place to live. Cheap delicious food; convenience stores on every other block; public transportation is great in Taipei, decent everywhere else; beautiful mountain hiking trails, and beautiful beaches in the south; very friendly people
Con: Real-estate is ridiculously expensive especially when you factor in the local salaries; Local work culture is very much long hours to give the boss face (I work remotely); Mandarin isn't the easiest language to learn (especially if you have hopes of reading/writing); The Taiwanese often miss my favorite form of humor -- sarcasm
(Living in Hsinchu to be close to my wife's family while we have little kids, but Kaohsiung and Taipei are tied for my favorite Taiwanese city to live).