In a social drinking setting, it loosens up the folks a bit of some inhibitions and help socially bond and relax better. 1 or 2 around long conversation is a sweet spot.
But then folks overdo the drinking part and go full unhinged dancing and stuff - is used as the only coping/stress release mechanism. Keep doing it week after week, month after month with the same set of problems, but feelings/emotions get reset. And years later, one day, it hits - that there are also other ways to....
I quit because the later case scenario dawned on me much sooner, and cant do more of this pretend happy and enjoying stuff. Key is having an identity & hobbies outside work and socially designated life responsibilities.