I can sort of see how queues make no sense in some cases. Say you arrived on a flight in PPT and you're waiting to get through immigration...since you all arrived on a plane at the same time, what's the point of a queue? Usually queues are an issue of fairness for the earliest to arrive. By enforcing a queue, you are creating a game whereby the fastest walkers get rewarded.

The other problem develops in "queue cultures" when you have multiple queues with single servers at each queue (by far the dumbest way to organize a queue). When a new server opens up, all bets are off, people from the back of the line run to the new server and form a line...totally neglecting the real reason for the queue (those that have waited the longest get to go first).

Queue or not, it's about not being a selfish pig.