I think we are confusing gay rights with others rights.. Of course homosexuals have the legal right to live together. Therefore that should be no civildidcrimination on them. But homosexuals want more that civil union with the same civil rights as others. They want to call their union marriage. This is the name of a sacrament. Only the Church can authorize it. Do gays want to be married in a church. Surely the church has some say in this.
If a civil marriage is allow does the church have to recognise this as fulfilling the requirements of the sacrament. For example should we allow homosexuals to marriage again without divorce. For A catholic they were never married so they are free to re married a person of the opposite sex even in church. Yet we would have to obey the civil law and ensure a divorce first . This is interfering with church rules on marriage.
Also do we have to provide our churches for gay marriages. These are still the most fashionable places to get married. Gays would want to marry in a Cathedral or fashionable church. Must we be force to allow this?
Also on custody of children. Should we allow gays to adopt. Must the church recognise such adoptions, and educate their children.?
Given rights to one group can take away rights from others. An example of this is the abortion laws in Victoria. A doctor is required to suggest a name of a doctor prepared to give an abortion. A catholic doctor has to act against his conscience to do this. We are trying to change the law but at the moment this is a denial of a religious right to satisfy some one else rights.