While most experts think it’s okay for adults to cuddle and even sleep with stuffed animals, most also believe that there are underlying reasons why certain adults grow out of their transitional items and some don’t. Interestingly, Millennials are the largest group that sleeps with their sentimental items followed by Generation X and Baby-boomers. Why that might be is not well researched yet. Some experts believe the increasing trend of sleeping with childhood items might be due to greater acceptance and tolerance. Others suggest that adults who still interact and depend on their stuffed toys might be due to low self-esteem due to an emotionally turbulent and challenging childhood.