Perhaps a more moderate change might be appropriate: Permitting men who are married to become priests. This is the practice in the Eastern Orthodox churches. Notice particularly that the marriage must come BEFORE the ordination; that is, those who are unmarried at ordination must remain unmarried, and married priests whose wife passes away may not remarry.
It is also the practice in the Eastern Catholic Churchs.
http://en.wikipedia.org/wiki/Eastern_Catholic_Churches
http://en.wikipedia.org/wiki/Clerical_celibacy_%28Catholic_Church%29#Eastern_Catholic_Churches