I'm just not a fan of this place.
The airport is too big and too spread out, it's outdated, and no one is very friendly. I've flown into PHX four times in the past year, and I hate it more with every trip.
It seems like the airport isn't well thought out; they just took advantage of all the space and spread everything out too much. And heaven forbid you have a rental car - enjoy that trip around the sun.