Paul also clearly states (1 Cor) that celibacy is a higher calling than marriage. Priestly celibacy is a "discipline" as opposed to a "doctrine" of the Latin Rite Church. There are catholic churches that do not impose this discipline (though there is a big difference between a married man being ordained - ok, and a priest getting married - not ok). And there are, even as we "speak," married priests in the Latin Rite Church.
Although, as you might infer from my screen name, my personal faith tradition is not one that follows the Latin Rite discipline, I have come to the conclusion (even before I swam the Tiber) that there is compelling justification for this particular discipline of the Latin Rite Church.
If you have not yet read, The Cae for Clerical Celibacy, by Cardinal Stickler, I recommend it highly for its scholarly treatment of the history of clerical celibacy. It was a real eye-opener for me.