Personally I drive when I can, especially between Fairbanks and Anchorage.  I enjoy the drive and stopping off along the Parks at places like Mary's McKinley View Lodge for coffee and really great pie.  The food on any airlines, to include Alaska, is terrible. I can remember when everyone received a decent meal on most flights.  

I'm not renting a vehicle at the other end, waiting around in the airport for a couple of hours or standing in those lines and getting frisked by security.  Of course the mileage between most Alaskan cities is basically chump change. 

I haven't been MVP for years and do not intend to do so in the future.  I have nothing but disdain for those special lines. I perceive a radical shift in how the average customer is valued by the airlines, and it isn't good. 
I prefer to board a plane last instead of sitting in those cramped seats any extra time.  There is plenty of legroom in the emergency exit rows and they are usually easy to book when I am forced to fly.