[kelnos]

SF to LA is 6-7 hours, and I prefer to fly. Given that the drive to the airport is around 25 minutes, I usually arrive at the airport no more than an hour before my flight, the flight time is around an hour, and getting out of the airport post-landing takes about 10 minutes (I never check bags), that's less than 3 hours, during one of which I get to sit and do nothing (nap, listen to music, watch TV), versus 6-7 where I have to concentrate on driving. With the driving option, I also have to deal with parking at my destination.

Sure, flying is probably still more expensive (though gas alone for the drive is probably at least $100), but I find it worth the added convenience.