A couple quick thoughts.
**Protestants do reasonably well with married clergy**. There are problems, of course, but not the shortage of clergy that Catholicism faces. Certainly they haven't faced the dimensions of the sex scandal which Catholicism has faced. Their major problem would likely be divorce among clergy. That usually gets handled, and they move on.
**Marriage was established by God** for a variety of reasons, among them raising children, companionship, the joy of intimacy, etc.
**Scripture doesn't condemn marriage of clergy**. The New Testament says that a bishop should have only one wife. St. Peter apparently was married as the Bible refers to his mother-in-law.
**Sex. yes, sex**. The normal human being, certainly males, has a natural desire for sexual relations. Too often the Church seems to have sullied that, in part (I fear) because of the celibate clergy. They make so much out of virginity, starting with Mary. Is there anything more Christian, more beautiful, more important to the world than a husband and his wife, devoted to one another and raising children together? I don't think so.
**The main thing is that there should be a choice,** as in Protestantism. While most ministers marry, some choose not to. That should be an option.
** One additional point which I hesitate to mention.** I think the priesthood attracts a high percentage of gays. Why? Many gays hoped and prayed that becoming a priest would help them overcome their same-sex attraction. Also, they wouldn't be urged by parents and others to marry and they would be in an all-male fraternity. I also have wondered if the ornate robes and beauty of the sanctuary and the drama character of the Mass doesn't attract gays. This is not to condemn all gays certainly, but may help explain (in my view) why the large majority of priestly sexual predators targeted teenage boys.
God bless everybody - no exceptions.