The Regnerus study did not examine as its sole focus the outcomes of children raised in same-sex households but, because of sample limitations inherent in the field of study at this point, examined primarily children who acknowledged having a parent who had engaged in a same-sex relationship. Thus, the Regnerus study cannot be viewed as conclusively establishing that raising a child in a same-sex household produces outcomes that are inferior to those produced by man-woman parenting arrangements.In fact these limitations are expressed by the study, in the Regnerus testimony, and in my postings on the subject.
If a study showed that women have more mental health issues than men, that would not prove that men should always get child custody than women. Likewise, this study does not show that gays and lesbians should never rear kids.
Any time a study makes a statistical statement, there are always fools who do not understand such statements. For example, if you say that studies show that cigarette smoking increases the risk of lung cancer, there is often a wise guy who argues the opposite because of one guy who smoked every day and lived to be 100 years old.
It is extremely rare for any study to conclusively establish any child-rearing method or environment produces outcomes that are inferior. There are studies showing that black families have high rates of juvenile delinquency, but you will not get any court to say that black parents should not be raising kids.
Same-sex marriage is being legalized for political reasons, whether it is good for kids or not. The available studies indicate that gays and lesbians make lousy parents. The studies are not definitive, and we should have better ones in a few years when we can study a lot more couples engaging in this grand experiment.