""Some of these treatments can be controversial"
Only to the religious..."
No, this is not true. There is a lot that is controversial about medical treatment.
Routine use of drugs, indefinitely, with significant side effects, to treat not-that-serious complaints that can be ameliorated with life style changes, for instance.
This is an interesting example for me because I believe that the profit motive (in drug companies) has a lot to do with this, and is (in medicine as in many other contexts) being allowed to erode the principle of the value and dignity of every human being. For me, this is not necessarily a religious view of humanity; but in many cultures its position, such as it is, in the mainstream, is derived from the relgious heritage of this culture (so in the UK our human rights language comes out of Christianity, though you need not be christian to buy into that view now)
However; it seems to be the case that the organisations who most effectively and directly oppose the degradation and destruction of people for profit, seem to be religious. And that individuals who have that backing, seem to be the ones who are strongest and have the most clarity in attempts to apply these principles in daily life.
Where does this strength and clarity come from? They may say they feel their strength of purpose flowing from God. It may also be that this is because the act of collective worship, of optimistic and honest fellowship with other people, is good for all communities who are attempting anything.
So. If you are buying into the sort of Christianity that I can see any point in, it is not a matter of believing in fairies as an individual. It is a matter of living Christianity in your life and using your faith as the life force that guides you - your "breastplate" as St P had it. So you can't say "just be christian at home" or "just be christian in church". That is just entirely missing the point.
and yes there is a tension there. but the thing is, some things are worth something, and as the example above about having to put up with burglary being illegal - I think society is better for it still being common and mainstream that people get together and consider non-commercial and overtly spiritual values that place the sacredness of the human at the heart of who we are. If we did not do this and feel this I think we would have seen the end of the NHS a long time ago; forget about food banks; etc. I think that the exercising of this part of the self is a large part of what makes life worth living at all