In Nicholas Kristof's column...

...in the Times today, he argues that there are really "two Catholic Churches."

One is the rigid all-male Vatican hierarchy that seems out of touch when it bans condoms even among married couples where one partner is H.I.V.-positive. To me at least, this church — obsessed with dogma and rules and distracted from social justice — is a modern echo of the Pharisees whom Jesus criticized.

Yet there’s another Catholic Church as well, one I admire intensely. This is the grass-roots Catholic Church that does far more good in the world than it ever gets credit for. This is the church that supports extraordinary aid organizations like Catholic Relief Services andCaritas, saving lives every day, and that operates superb schools that provide needy children an escalator out of poverty.

This is the church of the nuns and priests in Congo, toiling in obscurity to feed and educate children. This is the church of the Brazilian priest fighting AIDS who told me that if he were pope, he would build a condom factory in the Vatican to save lives.

This is the church of the Maryknoll Sisters in Central America and the Cabrini Sisters in Africa. There’s a stereotype of nuns as stodgy Victorian traditionalists. I learned otherwise while hanging on for my life in a passenger seat as an American nun with a lead foot drove her jeep over ruts and through a creek in Swaziland to visit AIDS orphans. After a number of encounters like that, I’ve come to believe that the very coolest people in the world today may be nuns.

Fair enough; a lot of Catholics do a lot of good works in the world. I don't think there's ever been much argument about that. But my question is this: given all that, why do Catholics need the Vatican and the church hierarchy at all?