There is a HUGE difference between incest and homosexuality. Incest is both morally and genetically wrong. You can not equate the two.
You seem to be drawing your posts from the logicjumpin-exaggeratin-Ad hominem-strawman-Biblethumpin’ and free banjo jamboree playbook.
Standards of what is wrong change.
Not really, they are both sexual orientations. Same as bestiality and pedophilia over the age of 12 like in the Nederlands. And why should you care about genetics, haven't you heard of safe sex or abortion? It's none of your business anyway when it comes to the 14th amendment. So your 14th amendment argument is worthless when comes to discriminating on a behavioral basis isn't it?"
Still, using your logic, would support same sex consensual incest since there is no genetic problems, can the military discriminate against that?