When I used to live in the Denver area, I would often have a 30 minute commute to work, and about 45 minutes back home with the thicker traffic. On one hand, I enjoyed the drive because it gave me time to think, and time to listen to some good radio and audio books. It was also before I had kids, so I was not really pressed for other commitments. But it got old after a while.
I live in a much smaller town now, 5 minutes from work. Even though I am not particularly fond of small towns, the short commute has spoiled me. If I moved back to a bigger city and had to go back to a longer commute now, it would probably frustrate the hell out of me.