Well let’s be fair. Washington DC's and Baltimore’s combined metro areas are 8,207,040. Albuquerque's metro is 815,000. And it isn't a secondary airport, but rather a mid-size airport. A secondary airport would be more like Dallas Love field is to DFW or Houston Hobby is to Houston Bush Intercontinental.
Compared to cities of similar size to Albuquerque, Albuquerque has the best airport hands down for flights.
Tucson, ABQ is much Better!
Oklahoma City, ABQ is much Better!
El Paso, ABQ is much better!
Omaha, ABQ is much better!
Tulsa, ABQ is much better!
You name a city within +/-50% of Albuquerque's population, and Albuquerque will be a better airport in terms of flights ,airlines, prices, and availability hands down every time!
Obviously Chicago, Atlanta, Miami, Houston, Dallas, PHX, LA, NYC, Cincinnati, etc. are going to have better airports. But they are all URBAN, and that is what the poster is trying to get away from. So if the poster wants to live in a city of Albuquerque’s size, Albuquerque would be the best option because of the Sunport.
All of your points LLD are very valid, however, they don't all apply to the what the poster is asking for. (He doesn't want to humidity, so Washington, Dallas, Houston, Florida, New York, Chicago, Atlanta, Philly, Seattle, Portland, and other large airports are out just becuase of that.) And yes you have been very spoiled in the way of flights in Washington, DC.