What policies are based on supernatural suspicions?
In part, all of them, given the input of The Church of the England in the drafting and the Head of the Church in the ratification of all legislation. In the specific it's been instrumental in the past in laws on slavery, denying women suffrage, denying women rights, denying gay people rights, and currently it's active in opposition to things like the assisted dying bill.
You might not think it but sufficient numbers thought it for Dawkins to answer it in his documentary “Religion, root of all evil?”
Channel 4's documentary - Professor Dawkins explicitly did not want that title, as he's said at the time and since. And maybe some do, but I was answering for me.
You will have to justify if, where and how they validate it. How for instance does the religion that gets people to wear masks so as to not hurt flies, validate atrocities?
When they say that a world-view based upon fairy stories is valid. When 'I believe' becomes sufficient to deny reality, the exact same argument can be utilised whether the tenet you want to cleave to is 'all good dogs go to heaven' or 'all the infidels should be bombed to a paste'. 'God wants it' isn't open to rational debate, regardless of what 'it' is.
That presupposes that without religion health and care would be a priority, ignoring religions historic role in health and care and indeed education.
Money's role in health and care is important. Societal structures role in health and care is important. Religion's role in trying to dominate those fields implicates in health and care, but health and care are available in other places. Sure, religion sometimes offers - for religious reasons - health and care, but sometimes it uses health and care to syphon up money and prestige for the Vatican while lauding suffering for poor people in India. And whichever of those it does, it's doing it for poor reasons.
None of which are guaranteed in a religionless society.
But it is guaranteed that suicide bombings will go down, that sectarian violence will go down, that one more pillar of institutional and cultural homophobia and misogyny will go away, that fewer children will be signed up by their parents for harmful conversion therapy.
O.