Experts have found that when alcohol is consumed, endorphins are released - peptide neurotransmitters that ensure the activity of the anti-pain system of our body. In addition to the analgesic effect, the release of endorphins causes a feeling of mental and physical comfort, as well as a feeling of euphoria. This in turn contributes to increased friendliness and empathy.
Yes, everything is simple) They are on the same wavelength with each other. And sober - on the other. It's the same story with substances. Humanity has long been using alcohol and substances in order to expand consciousness and reach one or another desired wave. You can say as much as you like that this is bad and harmful. But this has been going on for millennia. And it will continue.
As for me, drunk people understand each other, because they are not able to understand their interlocutor: I want to express my point of view as soon as possible)) I remember talking with a friend for an hour and a half (both were at a decent degree). My friend was sober and heard our conversation, she said that I said one thing, she answered another, I assented and opened the third, and so on) in general, a conversation turned out from nothing and about nothing)