for a small segment of the human population. Homosexuality has persisted throughout recorded human history. A small segment of the human population will always (if the past is any indicator of our human genome) be homosexual.
If it is normal to be homosexual, is any law limiting the rights of gays reasonable if it is based solely on being homosexual? Someone is going to offer some specific thing like: yea, homosexuals can't be around children because they will molest them - ignoring the fact that most pedophiles are straight.
Let's outlaw divorce.
WHOA!?!? Where did that come from?
The most common refrain from those opposed to gay marriage is that it will have a devastating effect in marriage. They have not, to me, provided any proof or specific example of what that effect might be, but it is devastating....
Ever watch a marriage unfold in a divorce? On a rare occasion we have two adults in the process, but more commonly we have one adult and a child (the other is actually an adult that is acting so childish as to appear a child in all but age). And watch out when we have 2 children getting a divorce.....no barbarian EVER considered leaving that much destruction in their wake, even the Romans did less to Alexandria. God help the children in those situations because nothing else will.
If people REALLY wanted to protect marriage, they would outlaw divorce. That will have a much greater impact that the potential damage (if any) gay marriage would have on straight marriage.