You also fail to note that if Taiwan declares independence, it is relying solely on the US to give it protection. What protection can the US give? In the first 48 hours, missles from Fujian province will hit everywhere in Taiwan on its economic resources such as oil refinery, two nuclear reactors, Tsinchu Industrial park (TSMC, etc. are going ot be destroyed), Taipei, etc. Patriot missles are estimated to be able to shoot down around 15%, so it means even if Taiwan has 700 Patriot missles, matching China's missles, it can only shoot down 105 of them, 600 are still gonna land. By the time US carrier groups gets there, and IF Bush decides to do so (if Taiwan declares independence FIRST, then i have serious doubts that Bush will even act -- Bush will only act if China attacks without provocation), 90% of Taiwan's industrial/economic strength will be destroyed.
If you're Taiwanese and you want this for your own people, you're freaking stupid. US policy has always been to sacrifice other people for their own strategic interests. Killed 100,000 Iraqi civilians to topple Saddam, murdered 1 million black slaves for its own economic growth in the 1800's, killed millions of German and Japanese civilians during WWII (though in this case, i'd agree what had to be done), supported Saddam Hussein in the 80's, even during his chemical war on his own people, etc. etc.