I'm fortunate that all 4 airports you mention are 45-60 mins from my home. When I was a UA flyer I flew out of Sacramento all the time, but I find the AA sale fares the last year have been sending me to SFO all the time (and SJC the year before, and OAK the year before that, when AA still did OAK-JFK and OAK-LAX). I'm very dependent on where the best fares are, and it just hasn't been Sacramento recently. I'd love to fly out of there more, but won't pay the premium.

I do have an award ticket on Alaska next month to/from SEA, and will originate at SMF. With $7 a day parking there, and no bridge for me to cross (which jumps to a $4 toll in January, with 2 bridges to cross to SFO ), it's an easy choice for a long weekend trip.