Your sources are complete nonsense. The first study you linked actually concludes > There seem to be no negative associations between bed-sharing in toddlerho

Your sources are complete nonsense. The first study you linked actually concludes > There seem to be no negative associations between bed-sharing in toddlerhood and children's behavior and cognition at age 5 years. And also only samples low-income families, which already show negative behavioral trends from the more difficult living. And the second source only vaguely concludes that co-sleeping can > negatively affect a mother's mental health and cause her to get less sleep. Finally, none of these studies focus on the long term effects, which the OP is talking about.