I don't understand why this comment doesn't have more upvotes.

It seems, on relationships at least, that LW resorts to a sort of phoney rationalism, where theory does a lot of the work, with very little recourse to evidence. Has anyone here ever linked to studies on the effects if marriage on happiness, productivity, etc.?

I don't want to link inside LW, so here's an example from outside of what I'm talking about; the apparant attempt to combine generalising from one example with deduction from first principles, and from this find a theory of relationships.

This is a shame, because I do think rationality has enourmously benefitted my current relationship. I just don't think LW usefully discusses such things.