I think all your questions boil down to what type of libertarian you are and how you view the law. Are you a libertarian, anarchist, minarchist, or other variant? Do you believe that all taxation is theft? Do you think that all government is force? When is it acceptable to use force?

Once you settle some of those questions, or at a minimum the question of when the use of force is appropriate, then we can talk about whether we should do away with traffic laws, seat belt laws, pornography laws, and others.

I would contend that it is always wrong to initiate force, so any law which intends to affect the peaceful, voluntary interaction of consenting adults is the wrong usage of the law. I would suggest everyone should read The Law by Frédéric Bastiat [1850]. It is essential reading for any lover of liberty.

Come join us in the Steemit Libertarian Chat Channel. I'd be glad to know you more.