It's not a major concern for me. I'm lucky enough to live near work and I only work 3days/week. I often bike or run to work. Sometimes I go several days without driving a car at all.

By saving money on my work commute I feel less guilty about spending money on gas for trips.

And yes, every cloud has a silver lining. I hope that increased gas prices will result in cleaner air, less congested roads and less dependency on foreign oil. Drivers will become more efficient. Many of my work buddies drive huge SUV's or pickup trucks to work. Most never haul anything or even see so much as a dirt road.