It’s interesting how the “what if” situations apply. Not everyone is able to adopt for various reasons. From the purely secular view, anyone could, within certain limits, or not, do anything. But from the Catholic perspective, the answer is clear:
“As experience has shown, the absence of sexual complementarity in these unions creates obstacles in the normal development of children who would be placed in the care of such persons. They would be deprived of the experience of either fatherhood or motherhood. Allowing children to be adopted by persons living in such unions would actually mean doing violence to these children, in the sense that their condition of dependency would be used to place them in an environment that is not conducive to their full human development. This is gravely immoral and in open contradiction to the principle, recognized also in the United Nations Convention on the Rights of the Child, that the best interests of the child, as the weaker and more vulnerable party, are to be the paramount consideration in every case.”
Full document:
vatican.va/roman_curia/congregations/cfaith/documents/rc_con_cfaith_doc_20030731_homosexual-unions_en.html
Of course, adoptions by gay couples have occurred, but that’s why Catholic adoption agencies closed when the State gave them an ultimatum that was against their beliefs.
Ed