The conventional wisdom is that homosexual parents are able to parent as well as a married heterosexual couple. Yes, it's possible, I suppose.
Then take this case of two lesbians raising a boy. The kid turns out to be diagnosed with sexual identity disorder. Could be a coincidence. Could be that the boy would have ended up the same even if he were placed in a home with a mother and a father. It's something to think about and discuss. This is not a question about the women's lifestyle or their rights or anything like that. It's about what is in the best interest of the child.
I did write a lot about it and posted it. But I think I can take a more charitable approach to the topic than that post achieved. I have therefore taken it down and will revise it. In the meantime, if you have any thoughts on the matter, please let me know.