Oddly enough, Stephen, one only has to produce a single opposing example to show that your case is dead in the water.
Errm no. I made a claim and all I have to do is to show two examples to demonstrate my case behaviour(s). Since you haven't argued with the first point I only need to produce one more. Since I have a list as long as my arm this won't be difficult. Do you really need me to carry on?
What you need to do is to produce one example of behaviours driven by non-naturalistic means.
So, here goes. Love. We all know that when Person A falls in love with Person B, various chemicals are released in Person A's brain (even if the feeings aren't reciprocated). However, that is not love, nor is it the cause of love. Rather they are a symptom, as it were, of love.
How do you know that the chemical's are the symptom of being in love, or that love is caused by the chemicals? You simply seem to have asserted that. Personally I wouldn't go with either extreme. But each to their own.
Incidentally a cursory look at the literature reveals at least some evidence that it is the chemicals that are playing a role in love, rather than the other way round as you state.
http://onlinelibrary.wiley.com/doi/10.1016/j.febslet.2007.03.095/fullIn particular read the part on trust; chapter 8
As far as I am aware, amd I've read pretty extensively about this and related issues, there is no scientific explanation for the initial process(es) that create the symptoms. Nor, for that matter are there any such explanations as to why two identical twins, for instance, can fall in love with two very different partners.
Whether or not there is a scientific explanation available does not mean that a non-naturalistic element has been demonstrated.
Identical twins are not identical in many ways. However, no one is claiming love is solely determined by genes, that I am aware. Just because it might not be genetic doesn't show that it is non-naturalistic.
Nor is there any scientific explanation of why people brought up in the same setting can have such divergent ideas about something such as beauty.
Just because people have been brought up in the same setting doesn't mean they have gone around glued together 24/7.
So after all this we still see no example. Just an assertion that love is non-naturalistic, no working, no logic, It just is.
I will repeat again.
Whether or not there is a scientific explanation available it does not mean that a non-naturalistic element has been demonstrated.