Taiwan has a much better living environment compared to China. Taiwan is a modern democracy with a free press where as if you live in China your access to media is restricted (some websites are blocked etc). The quality of air and water in Taiwan is much better than in China.Was Taiwan returned to Chinese control?
Of course the KMT government itself took the position that Taiwan had been "returned" to China on Retrocession Day on October 25, 1945. But the U.S. government never recognized that position.