I think you are not aware of research in acquired taste. It turns out that the effect of particular foods and drinks on psychological states create some deep subconscious associations. Take this as a clear and striking example:
"A study that investigated the effect of adding caffeine and theobromine (active compounds in chocolate) vs. a placebo to identically-flavored drinks that participants tasted several times, yielded the development of a strong preference for the drink with the compounds.[3]"
I think that's why I do enjoy beer now, even though I thought exactly as you did several years ago. I thought it was a huge collective rationalization. Which I still think is a big part of it, specially among teenagers and young adults who like to boast about being strong drinkers and how oh-dear they love alcohol so very much. But grown up people do drink, say, one beer alone and seem to enjoy it quite a bit. But without the pleasant relaxation that usually follows, though, the taste would not be agreeable. So we see a deep neurological change in the way we process taste.
This article is a deliberate meta-troll. To be successful I need your trolling cooperation. Now hear me out.
In The Strangest Thing An AI Could Tell You Eliezer talks about asognostics, who have one of their arm paralyzed, and what's most interesting are in absolute denial of this - in spite of overwhelming evidence that their arm is paralyzed they will just come with new and new rationalizations proving it's not.
Doesn't it sound like someone else we know? Yes, religious people! In spite of heaps of empirical evidence against existence of their particular flavour of the supernatural, internal inconsistency of their beliefs, and perfectly plausible alternative explanations being well known, something between 90% and 98% of humans believe in the supernatural world, and is in a state of absolute denial not too dissimilar to one of asognostics. Perhaps as many as billions of people in history have even been willing to die for their absurd beliefs.
We are mostly atheists here - we happen not to share this particular delusion. But please consider an outside view for a moment - how likely is it that unlike almost everyone else we don't have any other such delusions, for which we're in absolute denial of truth in spite of mounting heaps of evidence?
If the delusion is of the kind that all of us share it, we won't be able to find it without building an AI. We might have some of those - it's not too unlikely as we're a small and self-selected group.
What I want you to do is try to trigger absolute denial macro in your fellow rationalists! Is there anything that you consider proven beyond any possibility of doubt by both empirical evidence and pure logic, and yet saying it triggers automatic stream of rationalizations in other people? Yes, I pretty much ask you to troll, but it's a good kind of trolling, and I cannot think of any other way to find our delusions.