I have once read an article saying, based on a conducted study, that children raised by lesbians turned out psychologically better than children raised by "traditional" parents. The study was conducted for a period of 25 years following closely children of lesbians who were born using artificial insemination. These children, compared to children raised in "traditional" homes, turned out to be happier, more social, less aggressive and manifested less anxiety. Although the study was funded by gay and lesbian rights groups, the head researcher insisted that the data were not altered in any way. To help reduce potential bias, all the measures were scored using quantitative/number measures.
I think LGBT community will, in general, agree with the conclusions and I think that the majority will not think in any way that there is any subjectivity to it. On the other hand, I am sure that while some will remain neutral, a big part of the “traditional” world will think differently with more or less polite comments.
This wasn't the only study and I didn't come across any information that could lead to any other type of conclusion. There were few surveys that stated that oftentimes children in the same-gender relationship are more likely to face social and emotional problems. Despite what many straight people think, there is no indication what-so-ever that there could be any danger or big difference for the child to have two moms, two dads or a mom and a dad. No matter of sexual orientation the big factors I see could be reduced to the parent's role, the society's acceptance and the child’s take on the situation:
Are you ready to go through all good and bad?
Are you sure you have what it takes?
Yes? Then get ready before you embark the journey. Enjoy the parenthood. :-)
No? Make sure you are okay with the decision, have no regrets and enjoy your love life at maximum.
"In hope of a world, that does not celebrate the fake & the cold
In hope of a world where true emotions can be uphold
In hope of a world where truth is told
In hope of the world where sugar coated abuses are not sold
In hope of a world that does not force you to fit in & fold
In hope of a world where tears are allowed to unfold
You are not told to fake happy when your heart can no longer hold
In the hope of a world that doesn’t go numb & cold,
While faking positivity & not being bold
In hope of that world where you & I can be true to our core
We are not judged for being human
And not expected to be a bot, running on a computer code
Let the beauty of true emotions and the warmth of real unfold
Sweet, sour, bitter, happy, sad, high, low, cold
Sincere bonds and true connects
Let us not turn the world into a fake emotion(less) zone"
by Vanashree Yadav