I came across this article this morning. The article arises from the current row in the UK concerning whether Catholic adoption agencies may exclude potential adoptive parents on the basis of sexual orientation. Most gays I know disagree with me in recognising pædophilia as a sexual orientation. Nevertheless I do and to the extent possible sympathise with those of such unfortunate predilections. Unlike normal homosexuality though, pædophiles require particular scrutiny and caution when it comes to interaction with children. The problem of adoption comes when normal homosexuals are conflated with pædophiles. If there were a high correlation between the two phenomenon, there may be a case to be made, but I have not seen any such evidence to that effect.
Homosexuals are just as capable as heterosexuals of providing prosperous homes and loving parenting. Indeed, given the population pressures our world is suffering combined with high levels of inequality, affluent homosexual adoptive couples are something of a godsend. Any people innocently, selflessly, and lovingly willing to give their time, energy, and soul to raising another's child should be revered in our society.
Regarding the legality of a religious organisation in discriminating adoptive couples, I must side with the religious organisations. Catholic organisations pushing for the right of discrimination against homosexuals are confused about child welfare and confused about the doctrines of their own faith. However, the right of conscientious action or objection for a religious organisation should be respected. Moreover, biological parents should have at least the control over their child's rearing in selecting adoption agencies holding similar values to their own. Therefore, the marginal decision for potentially gay versus straight adoption should rest with the biological parent. In this case, according special rights to gays in the guise of anti-discrimination actually amounts to pernicious undue privilege.
On the other side of the coin, the most harmful laws in this category are those which ban gay adoption.