Silhouette- unable to tell the difference between an online poll- and a decision by the Supreme Court of the United States.
There is no difference when it comes to qualifications to pass binding, lifelong decrees derived from armchair "child psychology". At most the Five Justices took their best guess at what might be OK for kids: (since they did not allow dissenting argument, nor was the case about "does this interfere with or cause harm to children's best psychological adjustment?)
So when it comes to the essence of the legal question "can adults break contractual obligations to infants when doing so would cause them harm", the Justices are equally qualified to the 9 voters on the poll here. They haven't heard that case yet and when they do, they'd damn well better listen to what kids have to say (link in my signature) at the very least. A read-through on the Prince's Trust 2010 survey wouldn't hurt either. Then if they find that boys lacking dads or girls lacking moms isn't good for kids, they can visit NY vs Ferber to see which one of the two (the newly and illegally preferential creation of a "class" of adults based on some deviant sex fixations, or children's psychological well being) they will find dominant in Law. From there, the states will likely sort it out, how they want to deal with "gay marriage vs mom/dad necessity for kids". ie: how they will or will not incentivize gay marriage with tax breaks, or if it should be legal at all..
Marriage was not created with adult interests in mind. Marriage was created with the expectation of how it would best serve children. Adults play a secondary role, not a primary one in how marriage was always defined. If it is found for gay marriage, it isn't merely "granting gays the right to marry". In fact, Obergefell was a five-person Declaration (two of which displayed patent prejudice) negating billions of people over a thousand years' understanding of the very reason the word "marriage" came into being: as a service to children and the society that had to deal with them as adults as a direct result of the environment in which they grew up.