Rent a Priest (http://rentapriest.blogspot.com/) has had quite a few good articles recently on married clergy and priests with families in African countries. They are worth checking out. It seems that in many parts of Africa, priests knowingly have families and as long as they are not too open about it, it is accepted. The most recent posting cites a priest who left the Catholic Church to openly marry his girlfriend/nun, because he felt it was dishonest not to be open about it.
Weakland also addressed the issue of a married clergy regularly in his book. So why does the Roman Catholic rite persist in not having a married clergy (with very few exceptions)? Only two reasons come to my mind. Sex and liberalism. At least with former clergy that I have met that are married, most seem to have a more liberal bend. While allowing married priests would not guarantee a more liberal clergy, I think it is a fear. There is also a persistant fear of sexual issues from the Vatican and I do not think that bishops want priests having sex. How would it look if your parish priests was using condoms? The few priests that are allowed to be married are converts from other denominations. In most cases, they are coming to the Catholic Church because they want to be a part of a more conservative church. Hence, the current married clergy are often more conservative.
And although I know that a married clergy has not solved the clergy shortage in other denominations, as conservative Catholics like to remind us, Catholics are different. Maybe it would work for us. It couldn't hurt, could it?
A Faithful Catholic