I still think you are missing the point Dave.

Do you agree that children are no more likely to be abused by homosexual carers than by heterosexual, as homosexuals are no more likely to be active paedophiles than straights?

I will certainly agree that children should be given the best possible environment; indeed, I blame my own parents for the inadequate family situatuion, as it didn't leave me sufficient financial independence. I have to work. But there are too few potential carers for all to be perfect. Therefore all we should ask is that they are about as good as the population at large. All the evidence suggests that they are, on the whole, considerably better.

Yes, placing children in care puts them at risk of abuse. That's the way our society is. Leaving other children in their "natural" home also puts them at risk of abuse. Not to mention cases in which physical or sexual abuse is swapped for emotional abuse- remember that there are other ways of damaging a child, just as destructive.