There are some married priests in the Latin Rite. There are many in the Eastern Rites.
It's a discipline, not a dogma.
Jesus and St. Paul commend celibacy. It's in the Bible, and it's always been part of Tradition.
Paul was only against marriage for those who were not married seeking marriage out while preaching and traveling abroad. If you were married, or you weren’t out in the field, then it was fine, at least that’s how I have come to interpret it.
Yes, I know this, however, all should be allowed to make that choice.