Have you ever noticed that standing in line for a long time is a lot like going to school? Remember when you went to school as a kid, you saw all these people who were older than you, you never knew them, never spoke to them, but you knew who they were. Because the younger ones always look up to the older ones. You would see them on the bus or in the supermarket and you would know they went to your school. On the contrary, they didn't care about you. So you got a little older and suddenly you were the age they were back then. And you see all these younger kids around the school, but you never pay much attention to them, do you? When you were their age, you knew the older ones, but now you don't bother with the younger kids.
It's like that with standing in line for something. You notice the people in front of you (granted, not surprisingly, given that you are oriented toward them) and you wish you could be where they are. But you don't care to see the people behind you, do you? What the hell for?