Furthermore, the argument against adoption by same-sex couples presupposes that traditional marital relationships necessarily possess the qualities and attributes that are required to provide a stable and loving home for adopted children. In fact, the rate of marital dissolution (i.e. divorce) in the United States is more than half of all marriages, and the average length of so-called "traditional" marriage in the U.S. is only approximately seven years (Henslin, 2007). Moreover, those statistics do not represent the actual level of happiness and healthiness of the traditional marital relationship since many more couples are unhappy but choose not to divorce for various reasons. In addition, spousal abuse and other forms of domestic violence are problems that occur quite regularly within traditional marriages and they are a serious social problem in society (Henslin, 2007). At a minimum, the argument against adoption by same-sex...

There is absolutely no evidence to suggest that is true and there may actually be anecdotal evidence to support the conclusion that by comparison, long-term same-sex couples suffer lower incidences of spousal abuse, and domestic violence and lower rates of dissolution than traditional married couples (Henslin, 2007).
Therefore, since the only objective argument against adoption by same-sex couples is that their children may be more likely to encounter negative attitudes outside the home, the logical solution is to address those problems in society rather than to limit the rights of the victims of those prejudices and negative attitudes of others.

Reference

Henslin, J. (2007). Essentials of Sociology: A Down-to-Earth Approach. Boston: Allyn & Bacon.