I have raised many children (8), and all of them are caring and kind. It is because a man and a woman raised them. The complexity and the sensitivity of this job is incredibly grave. There must be a natural order to all things regarding parenting; the natural order is a parent's ally. Deviating from this natural order is going to create very confused human beings; the civilization does not need any more confusion than it already has.
Please do not make homosexuality a part of adoption regulations. Two parents, a male and a female, is the most excellent way to bring up a child. Take it from a very experienced practictioner!