10.) It's Full of Old People
The median age in Phoenix is about 32. The median age in the United States is about 35. When people mark Phoenix as a place for retirees and snowbirds, they mostly mean the Phoenix area. Retirees have their own cities in the West Valley, for example.
The state's median age is 36, while the median age in Scottsdale is 41. It's not Phoenix that's full of old folks.