I am waiting for the study that finally concludes that:
"babies of mothers who like to co-sleep and hold their babies like co-sleeping and being held a lot. Babies of mothers who prefer to sleep by themselves like to sleep alone. Babies of mothers who like routine like routine themselves. Babies of mothers who like to go with the flow like spontaneity."
Mother and babies should be in synch. They can be in synch in their mutual love of cuddling, or in their desire to make faces at each other across a room, or in their love of sleeping in the dark and quiet, or in cat-napping whilst out for a walk, or in liking to snuggle in bed together.
You do what feels right for you and your baby - it's trying to second-guess your instinct that's wrong, and in trying to dictate to others what their instinct should be.