Firstly, the definition of “family values” is somewhat ambiguous, or rather has varying interpretations in different contexts. When someone is referring to gays and lesbians however, they are probably talking about moral and social standards, predominantly based on traditional and biblical teaching, of the family unit, and how you raise your children. In other words, for a start, being LGBT goes against “family values”, because God created Adam and Eve, and the importance of both a male and a female parent are seen as necessary for healthy family life.
Many gay and lesbian couples long to have a family, and many of these people share many of the “family values” found in heterosexual families. Loving committed monogamous couples who want to raise their children to know what’s right and wrong, to be polite, respect other people, etc. We do care, and we do have those standards. Just because we’re gay does not mean we are pro promiscuity or don’t care what our children get up to! I think a lot of gay and lesbian couples would agree that they would like their children to have both a male and a female role-model, and in a lot of cases, that can be found in a close family friend, an aunt or an uncle, a grandparent, or even the biological parent.
There continue to be studies on the effects on children in different family circumstances, but I am not going to go into all of that, suffice to say that there is no hard and fast evidence to say that children raised in a same-sex family are any worse off than other children. And when it comes to adoption, I would far rather a child is adopted into a stable loving home consisting of 2 moms or 2 dads, than no parent at all!
The point though, is that the statement outlined in the title is not true. We do care about raising our children to be morally and socially outstanding people, to the best of our ability.