Well, for one thing, we are a nation of laws. As a consenting adult, I cannot do drugs...they're illegal. I don't have the governments "permission" to do them.
We also have marriage laws in this country. Name one reason that gay consenting adults should be treated differently under the law than straight consenting adults.
I do not need the government's permission for anything, I am a free man. If you want to be a slave and ask permission of your masters every time you make a decision, feel free, just don't expect me to respect your decision. No wonder you prefer to pretend you don't have a choice who you sleep with, you prefer to let other people make your decisions.
Feel free to point out where I said the government should treat anyone differently for any reason. As I have pointed out, more than once, the very nature of government forces it to classify people. This always results in people being treated differently based on that classification, which is why I am opposed to government regulations of consenting adults. I know you have a hard time actually following logic after a lifetime of letting other people do your thinking for you, but I am right in this instance. The government should have no say in anything that consenting adults do, and I will never support anything that gives them that power.