My department never meets. There's only 4 of us, and we conduct any business we need to via email. We're pretty self directed.
The entire faculty (SLAC) has a meeting once a month. It usually lasts at least an hour and half. Meetings are pretty boring, but occasionally erupt into shouting matches which makes them worth attending. Most everyone goes but there's a lot of trickling out after the first hour, particularly if there are boring "reports" from stupid committees no one cares about.
Do we work at the same place? We have monthly faculty meetings that last about an hour and a half, sometimes longer. Most of the reasonable people, who have children or a research agenda, leave after an hour. The screaming takes place during the final 30 minutes.
We might be at the same place. Do you get booze after meetings?