Okay, if we take your evidence in combination with A4T's, I will be willing to concede (for now) that homosexuals have a greater probability of living a more promiscuous lifestyle.
However, on thinking about it some more I want to loop back to what Bybee said. I think I dismissed her idea as a knee jerk a bit too quickly. If legal precedence is created with this case and they are successful, it does make for a very abstract definition of what marriage is. Doesn't it?
A society must be able to set some defining parameters of what constitutes acceptable behavior or it risks anarchy. We have exalted the rights of the individual over and above the necessities of the community to a very dangerous extent here in America.