Take Washington state. Bestiality was made illegal there after a man tried to have sex with a horse and ended up rupturing his colon and bleeding out because he was too embarrassed to go to the hospital. It had nothing to do with it being "icky".
Enumclaw horse sex case - Wikipedia, the free encyclopedia
"A woman is like a teabag, you never know how strong she is until she gets in hot water." - Eleanor Roosevelt
Keep your religion out of other people's marriages.
The constitution guards against the tyranny of the majority. This is why gay marriage was won in the courts and not in the voting booth. Although I agree that courts should be extremely careful in overruling voters and I'm not sure they were all that careful with gay marriage. Its seems to me there was very little reluctance.
"God Bless Our Troops in Harms Way."
Then there are the would-be practitioners of adult incest or polygamy--who is going to bat for them? Where are the tear-jerking laments about how thousands of these poor souls are cruelly being denied the fundamental right to marry the loves of their lives by bigoted haters, just because they are different?
I am not persuaded that there is any constitutional right for homosexuals to marry each other, or anything even vaguely approaching it. I have never seen anyone explain what the source of any such right is. That includes Justice Kennedy, whose arguments in Romer v. Evans, Lawrence v. Texas, and U.S. v. Windsor are so short on legal reasoning as to amount to not much more than ipse dixit.