I wouldn't be so sure...
> just with a lot of unforeseen consequences.
Exactly, a classical case of Chesterton's fence.
> The laws we're passing are a consequence of belief systems too.
Some of them are (and you're making a very good point here!), but some of them may be just pragmatic.
> For people who see the world that way, these beliefs are unfalsifiable
Again, very true.
> just like the belief in an adultery-hating god.
As a Catholic, I think I can tell you that it might be more nuanced. I believe that ethical norms are not some arbitrary rules, but are a bit like the part of a manual for some device that says under what conditions the device works properly and under what conditions it may break, only for humans. As in "if you commit adultery, you will end up unhappy; you have been warned". (Cf. 1 Corinthians 12, 6 – https://bible.usccb.org/bible/1corinthians/6#54006012) Although IANTP ("I am not the pope";-)), of course, and neither am I a theologian, so take this with a grain of salt.