Because waiting in line sucks.
Apple stores are crowded places, and no matter how many people are working, it seems there just isn't enough staff to go around. However, all that could change soon, as Apple is rumored to be bringing out a new application that will allow customers to pay for accessories in the store.
MacRumors reports that Apple is planning to release an update for its retail store iOS app that will allow consumers the advantage of self-checkout for purchases of accessories and other off-the-shelf items from the store. The Apple retail store application currently allows customers to research/order Apple products for deliver; request help, check in for reservations, meet up with a Specialist or Trainer; make Genius Bar and One to One reservations and sign up for workshops and events; and reserve products for pick-up. With this new update, customers would be able to use that app to charge purchases to their iTunes account. They'll then show an emailed receipt to an Apple Store employee before leaving the shop.
The retail store app update is apparently coming November 3, which is this coming Thursday. However, Apple has not yet confirmed the news.

Apple stores are WAY overstaffed to the point where I don't even want to go in one for anything. As far as I'm concerned, they are little more than toy stores. That said, it is impressive what Apple has accomplished with its retail stores, and it will be interesting to see how this works out.
Accuse it of stealing technology and then calling it "magical" all you want, but this actually is true innovation.
from what i am reading its like a website with a real support option, and instore pickups of crap you buy online, just in an app now...
not saying its inovative, but it is progression.
in before patent.
On the other hand, I`m not an expert, so I don`t know if there is a vulnerability. That`s why I would like to know.
Way overstaffed, but way under in quality people. My church buys mac products (just to annoy me I think), and during our last upgrade we forgot to purchase a mini DP->VGA adapter for our monitor (the HDMI wen to the projector). It took me 15min to get someone's attention, 30 minutes to find someone who knew what a VGA adapter was, another 20min for the lady to find it in the back, and another 10min of her trying to sell me a cinema display. Literally over an hour to get something simple when I knew what I wanted. God help the poor customers who walk in and are not sure what they want to buy! On top of that the little $2 hunk of plastic cost $30 +tax because they were not competent enough to look up our church's non-profit status, and we had bought from their location before and they still could not find it!!!!!
I understand it is hard to find good people, but you cannot make up for it by hiring mass amounts of trendy morons.