6. We also decree that those in the orders of subdeacon and above who have taken wives or concubines are to be deprived of their position and ecclesiastical benefice. For since they ought to be in fact and in name temples of God, vessels of the Lord and sanctuaries of the holy Spirit, it is unbecoming that they give themselves up to marriage and impurity.
http://www.papalencyclicals.net/Councils/ecum10.htm
Your quote from Canon Law misses the point. The Catholic Church does not impose celibate vocations on people. If they choose it, it is their choice.