When Karol Wojtyła stepped onto the balcony of St. Peter’s Basilica in 1978 as John Paul II, he was only 58. Though that seemed unusual at the time, the previous century saw Pius IX elected at 54. Although we aren’t likely to see a pope as young as 20-year-old Benedict IX, elected in 1031, it’s safe to say that Pius and John Paul have broken the mold and made it possible for virtually anyone to be…