1) I have two kids, one who can read the other is just starting.
2) You would not believe how many times you are in the basement, you know you're in the basement, yet you click on the bedroom button.
3) for the mechanically minded, the order of the list changes based on connection time. so it's very often that one second the bedroom is at the top and the next it's at the bottom and basement has replaced it.
This just allows another quick way to identify the device by looking at only one character. but yes.. you could just read it as well.