That's ridiculous. The typical apocalyptic rhetoric about how nothing will be illegal anymore fails because every example given somehow violates someone else's right (i.e. pedophilia or rape) where consensual homosexuality between two adults does not.
And beyond that, for those who might be captious enough to quibble with semantics, most reasonable adults can and do discern between different sex acts. Most reasonable adults would reject the spurious premise that a dog can engage in 'consensual sex' with a human.
Then answer me this one. So far no one has on your side.
My daughter turned 16. She is by our state's law a consenting adult. She and i agree to have consenual sex. Our right to privacy trumps the state's right to forbid us.
So what physical union produced Chelsea Clinton?