Am I missing something here?
Is gay marriage not already legal in England? Can gay married couples raise up their own children? If so, presumably there are already countless gay couples that are raising up their own children. Are there any statistics that show children raised up by gay parents are less likely to be contributing members of society? Or more likely to face emotional and/or psychological issues? If there are, I haven't seen them.
If the answer to both is "no", and taking into consideration that people in England (from what I understand) are free to do/think/feel/act as they wish (obviously unless it causes violent conflicts with one another, or breaks legal law), why should there be an outcry over gay couples adopting. If as a society you're comfortable with gay couples getting married and raising kids, how is this somehow different? You've already passed the threshold of giving rights for gay couples to legal cohabitate, legally get married, and legally raise their own kids, surely legally adopting children is only natural?
And State and Church are separated in England, is that not so? So say you personally disapprove of gay couples raising up children (or maybe even getting married) strictly on religious reasons, in terms of the rights of gay couples in England, surely you'd agree that they have the right that everyone else has, even though you don't agree with it? Do we really want to live in a society where we only give rights to those that agree with us?