It is TW's decision between status quo and reunification. However, it is China's decision when it is proper to reclaim. Obviously China will not wait forever. We have a time table to fulfill China's obligation.
Reunification of China is the history obligation for all Chinese. Mao said so, Deng said so and Jiang said so as well. It won't be long for the proper time to come, basically the time with the minimum cost.
China won't let those TW islanders to decide this issue. Otherwise, Shanghai, Guangdong, Dongbei provinces can all claim for their independence. It is NOT that case of course.