That’s exactly my point. You don’t think harmful activities should be banned by government, or that government should be able to protect the culture we have. We’ve had 6,000 years of monogomous marriage in western civilization, but you would overthrow that because you have adopted libertarianism as a philosophy, where if you can’t figure it out using reason you reject it. What would result if we got rid of monogamous marriage?
To you, tradition doesn’t matter, harm doesn’t matter, just your opinion based on a very small snippet of experience (your life). You go so far as to say that people shouldn’t be allowed to legislate at all about it.
Why shouldn’t people be able to contract themselves into slavery?