Go To Arizona for Top Hotel Spas

I found a list of Travel & Leisure's Top 25 Hotel Spas in the continental US and Canada, as I browsed their October issue--just noting what cool places I will not be going to in the foreseeable future. Why did they include Canada in the parameters when no Canadian hotel spa made the list? To rub it in? (a little spa joke)
Hard to miss that five of the 25 hotel spas are in Arizona--four in Scottsdale and one in Phoenix:

Fairmont Scottsdale
The Phoenician
Camelback Inn
Desert Ridge Resort & Spa
Four Seasons Resort Scottsdale at Troon North

(Don't let the names fool you. the Phoenician is in Scottsdale and it's the Desert Ridge Resort that is in Phoenix.) Arizona has 20% of the best hotel spas on 3% of the United States land area. Why haven't I been there yet?!
The American Club in Kohler, Wisconsin ranks #5. Wisconsin's pride and joy, you may only know the name Kohler because it is etched into your bathroom fixtures. I know Kohler because their Sunday brunch is etched in my brain.
Don't we all deserve a spa weekend?