Gurrrrr, I'm on a parenting/pregnancy group online and the subject of co-sleeping came up.... the group was 99% FOR co-sleeping, but they all have stories about family members or friends who give them grief about it.
So here we go. Can you think of other animals who don't sleep with their babies? I can't. Can you think of any biological reason why it makes sense to leave your baby (who can't survive AT ALL without you) to sleep alone in a crib? With you in bed the baby can have easy access to your breathing patterns, heartbeat and they can breastfeed easier. Mom and Dad don't have to wake up as much. It is incredibly RARE for people to roll over on their babies. You are aware of your baby like you are aware of the edge of the bed. Furthermore, it is HIGHLY suspected that SIDS is caused by babies NOT sleeping with parents. Crib death it used to be called. Babies sleeping away from parents is sooooooooooooooooooo unnatural. It's abandonment, and that's now baby feels.