With believers aging and declining in number, and lacking in fresh blood, membership in the Catholic Church now lags behind that of other popular religions in Taiwan. It is not only far behind Buddhism and Taoism, with their millions of faithful, but even has fewer followers than other Christian denominations; the total number of Protestants exceeds 400,000.
教友老成凋零，缺乏年輕新血，使天主教目前在台灣的規模，比起其他民間信仰，不僅遠不及數百萬的佛、道信徒，連繫出同門的基督教，各分支教派總和人數也超過四十萬。