The lines form because Apple never has enough phones to even satisfy the 2 year upgrade crowds let alone those of us that upgrade every year.
Each iPhone launch is prefaced with the typical "there won't be enough supply" propaganda that Apple leaks to the press.
If you have 4 million people wanting a phone yet only have 750, 000 phones on launch it is very simple to see why folks are lining up.
I pre-ordered.
If that's the case, wouldn't you just wait? If I know there is a shortage of something, I don't wait in line hoping they make a new one while I wait.
In a way that is why I am glad android is so diverse. Yeah at times we all want people to think our phone is the best....but really I'm glad android is at a point where we have so many awesome selections, especially this year, and that we have people with different tastes. One of the reasons we dont have to worry about long lines is that people either already have the phone they want, waiting on something else, or the phone is either too big/too small/ too much skin/not enough features/etc. Point being, we all do not look at phones the same and that is great. Where I may look at the note 4 as too much bloat someone else see a lot of features that they wanted in a smart phone. And where I may see the nexus 6 as perfect someone else will see it as pointless to have a screen that large without a stylus for taking notes (ie note 4).