I have lived in Arizona for 12 years now. I have 2 kids, and HATE the fact that I have to raise them here (due to job and economic conditions, it is nearly impossible to sell my house, find a job practically anywhere else and move)
The summers are simply way too hot to do anything but sit at home and watch TV. It is unbearable to even drive to the movies or a mall to beat the heat...The spring, fall and winter are not as hot, but, face it, this is the desert, so everything is dusty, sandy and brown, so unless you are really into hiking,even hiking is not fun.
Because of the heat, or maybe the fact that most people living here are not originally from Arizona, people tend to keep to themselves, so you will almost never see kids playing even on a quiet cul de sac.
If you are into gardening, forget it--although it rarely ever freezes here, it is soooooo hot and dry for most of the year that cacti are the only plants you can grow around here. Since I am an avid gardener, I try to grow vegetables every year with very poor results--most vegetables literally cook on the vine before you get a chance to harvest them.
If you are the type that likes daytrips, don't bother, cause most places that are a couple of hours away look the same, and the drive is incredibly boring.
This is a great place if you are retired, can sleep all day, and spend all night gambling at nearby casinos. If you have pets, kids, hobbies or plan to have them, save yourself the agony and find somewhere else to live.