I'm willing to commit more time to cycling than to driving, because I figure I'm also getting my workout in and because I enjoy it. But there is a limit; I can't commute 50 miles each way by bike, because there would be no time left in the day beyond working, sleeping and commuting.

That said, I don't know that I actually spend any more time cycling than I would driving, once I factor in the variation in traffic driving, versus the consistency of cycling. Except that I got stuck behind a school bus this morning, and had to wait three stops to get around the bus.