I lived in Vegas for a few years, and never ran out of interesting things to do. There are lots of great outdoor activities like mountain biking, hiking, golf, etc. that you can enjoy at least 10 months out of the year (depending on your tolerance for heat in the summer). You can even ski at Lee Canyon.

Although you're dismissive of the strip, and I can understand why from the typical visitors' perspective, there are literally tons of things to do there and many of them are significantly discounted or free to Las Vegas residents. I did the math and over the course of 3 years I went to tens of thousands of dollars of things for free.

There are concerts, some of the best restaurants in the world, conventions, boxing, shopping, and more. Traffic is manageable. Cost of living is low. Flights to most places are cheap. You can be in Southern California or doing outdoorsy stuff in Utah for the weekend with a few hours drive, or easy 1 hour flights.