I don't support "evolving" on homosexual marriage and believe that we are seeing signs of what God told us was going to happen prior to His return. We can't stop society, or even our religions, from "evolving" because He has ordained that it will all become rotten - all we can do is carry His Word and try not to let our own lives become corrupted.
The truth is that civil divorce and a church annulment are two vastly different things. A divorce is concerned with the legal realities of marriage only; an annulment is concerned with the religious and spiritual element—the sacrament of marriage. A divorce focuses on the end of a marriage; an annulment looks at the beginning, the very moment the couple said "I do." A divorce looks at marriage in civil law; an annulment looks at marriage from the perspective of the Gospel and of Church doctrine. It is a myth that an annulment is "Divorce, Catholic style."