None. Jesus is the Rock of all believers.
If the following is an example of the *infallibility* of the magisterium or whatever committee they use in picking the next pope in their alleged apostolic succession, then I'll pass on Catholicism, thank you very much.
I wouldn't trust the judgment of any organization which couldn't do better than this.....
Top 10 Most Wicked Popes
http://listverse.com/2007/08/17/top-10-most-wicked-popes/
1. Liberius, reigned 352-66 [Catholic Encyclopaedia]
2. Honorius I, reigned 625-638 [Catholic Encyclopaedia]
3. Stephen VI, reigned 896-89 [Catholic Encyclopaedia]
4. John XII, reigned 955-964 [Catholic Encyclopaedia]
5. Benedict IX, reigned 1032-1048 [Catholic Encyclopaedia]
6. Boniface VIII, reigned 1294-1303 [Catholic Encyclopaedia]
7. Urban VI, reigned 1378-1389 [Catholic Encyclopaedia]
8. Alexander VI, reigned 1492-1503 [Catholic Encyclopaedia]
9. Leo X, reigned 1513-1521 [Catholic Encyclopaedia]
10. Clement VII, reigned 1523-1524 [Catholic Encyclopaedia]
Top 10 Worst Popes in History
http://www.toptenz.net/top-10-worst-popes-in-history.php
1. Pope Alexander VI (1431 – 1503)
2. Pope John XII (c. 937 – 964)
3. Pope Benedict IX (c. 1012 – 1065/85)
4. Pope Sergius III (? – 911)
5. Pope Stephen VI (? – 897)
6. Pope Julius III (1487 – 1555)
7. Pope Urban II (ca. 1035 – 1099)
8. Pope Clement VI (1291 – 1352)
9. Pope Leo X (1475 – 1521)
10. Pope Boniface VIII (c. 1235 – 1303)