For example take my commute:
Mapquest says: Total Estimated Time: 14 minutes
Tri-Met says: Travel time: 43 minutes (including 3 minutes walking and 8 minutes waiting)
Why have personal independence, a nice ride where I can listen to KXL and the lack of smelly bums and trash when I could spend an extra hour a day going to and from work? Plus I could stop showering (I assume that many tri-met riders go for this option) due to the standing in the rain!