You speaketh the truth. When I was in college, I was hired by a Frat house to play some parties for them. I dragged my LaScalas & stuff to their location and we had at it. I probably spent 30% of my time that entire evening, just perusing past the speakers and removing various amounts of beer cans, bottles & cups from them.
I hadn't thought about that reality beforehand and it didn't make me very happy. (though they did have a good coat of urethane on them)