Having only been here a short while I can't say much, but who though it was a good idea to put the sixth largest metro in the us in the middle of the desert. There seems to be no natural reason for its existence. What forces led to its creation and booning development. (Fording the Salt River doesn't count--never was all that big) I'm genuinely puzzled. No port, not on a rr mainline... Why is it so big?