I haven't read this whole thread, but ill add this.

I don't have kids yet. But my downstairs neighbors have 2 boys. Dad cycle commutes every day and mom drives. While it would be easy for the mother to drive the kids to daycare everyday, the dad chooses to drop them off on his bike on the way tto his job. He says it is quality time with his boys. As the boys grow, his bike setup is always changing (trailer, kid seat, ride behind), but he still does it everyday. He has been somewhat of an inspiration to me and when I finally have kids. Don't know what life will deliver at that time, but I plan to do the same If I can.