The status of commodity was put on children with the first case of artificial insemination. Couples can now go to a fertility clinic and buy sperm or an egg and even have another woman carry the baby until birth.
In the end you may be able to end gay adoption but you will never be able to prohibit a fertility clinic from selling a baby's necessary ingredient.
Both of you are right re children being commodities in our "high tech reproduction" culture. This is why I'm also against things like artificial insem, surrogacy, etc. for straight couples too. But Jorge, what I was hearing in your replies was something along of the lines of "we have to make it fair for gays". Compounding the first problem (children considered trophies) by adding a second (gay adoptions) is sicker than sick, IMO.