"The controversy however remains… have we gone too far in the prevention of SIDS that we are risking normal development and bonding in infancy?"
I think we have. I believe a lot of what has once been considered normal and natural related to pregnancy, birth, breast feeding, mothering an infant...has become over-medicalized to the point of parents being fearful not only of things like SIDS but also fearful of things like "spoiling" their infants. It has led to more dis-attachment and less healthy bonding with infants.
Certainly like everything moderation and safe practice is key. I wouldn't want to see an intoxicated mother sleeping with her baby, or a mother who is known to be a very heavy sleeper...but I know many families who have safely and effectively used co-sleeping as an integral part of their parenting.