The problem is that the USB port now requires a special cable which not all of us have lying around in quantity. It doesn't make it impossible, but it does make it more of a hassle.
Micro USB is hardly a "special cable" by any stretch.
It's the same cable and connector all of the raspberry pi models use for power
Pretty much all tablets and smart phones except Apples use them these days.
Also a good number of USB wall chargers typically have a USB-A on them and include a USB-A to Micro USB cable.
I was quite saddened to see most Slashdot posters don't even have a cheap-o $5 USB keyboard or ten laying around, and not including one with the original Pi being labeled "a deal breaker" - but really, no one around these parts has massive piles of both of those parts and more laying around anymore?