because you can't at the moment (as you've just shown there). if i go through the site, i will have to wait at least 2 weeks, and my phone just broke 2 days ago. i'm relying on the local stores to get them in, since i live right by them anyway. the fact that Apple store staff even admitted to not getting stock is what bugs me. it just seems like they didn't plan this release correctly even with a not so high demand.
So this is really all about you not being able to get what you heart desires.
SHAME ON APPLE!