Science does not have an understanding or firm grip on morality (right or wrong).
Questions of morality are answered by 1) philosophy or 2) religion. What makes your philosophy better than anyone else's, logically speaking?
Though this was not directed at me, I'd like to answer this as well.
My philosophy is that in order to decide each matter, I should have an open discussion about that issue. Common sense tells me that in order for me to be happy, I should try so that everyone else be happy as well. My happiness doesn't have to come at cost of others. Now, if someone's desires and actions doesn't harm me or others, then I'm not sure how someone could possibly be against what they want. Claiming It's icky, it's condemned in the some fairy tale scripture, it's abnormal, or it's going to hurt children raised by homosexuals, which by the way have no actual foundation is not a reason that their marriage is harmful to me or to others. That's why I feel my morals in this matter are sound.
