So you agree that government should not interfere with pedophilia or contaminating waterways.
Let's move onto other matters.
I believe that if anyone steps onto my property, I should be able to do with them as I please. This includes assault, rape, murder and torture. Do you disagree?
I also feel that aboveground nuclear testing would be a fun and educational hobby. As government cannot morally forbid the sale of nuclear materials, and what happens on my property is my concern, I believe I should be free to detonate a thermonuclear weapon if I so choose. This would cause some fallout, but as we've established my right to do as I please on my land, certainly you agree that this should also not be interfered with using violence.