When Jesus walked on the earth, HE sent out the disciples two by two. Why? Because there is power in agreement.
Since God said, "it is not good for man to be alone".
I think God knows best. Priests should be allowed to marry.
*ahem* In those times it was very dangerous to travel, hence the necessity of men traveling in pairs or more. It was too dangerous for women to travel much at all.
Watch out, with the logic you used someone could make a case for gay marriage.