Whenever people have strong views like this, I'm skeptical how hostile they'll be to innocent people who don't fit their sharply defined worldview. In the UK a 16 year old "adult" can marry a 40 year old. If you support that right are you are active in opposing the 18-years age of consent laws in some US states? If you don't support it, do you see the UK laws as enabling child abuse?

My point is that when you put arbitrary conditions on what you're going to accept, you can end up including and excluding some people unfairly. How about just "as long as nobody is harmed"?