Really? I see this all the time.

You can especially see it on airlines that have signs for group lines labeled 1-5 permanently displayed at the gate. As soon as the announcement goes out that the boarding process will begin shortly, a dozen people from Groups 4 and 5 will rush to their lines.

I've never understood this. I just sit back and relax until the mayhem calms down and then I just stroll on at the back of my group.

We all leave at the same time, so what's the rush? Then again, I don't ever travel with just a carry-on bag.