Why do little boys start to play with them self at an young age?

Young boys, like young girls, may touch their genitals for a variety of reasons, most of which are perfectly normal and developmentally appropriate. It's often driven by curiosity about their bodies, a way to explore sensations, and a form of self-soothing or comfort. There's no single reason, and the behavior can vary widely from child to child. It's important to remember that this is usually not a sign of sexual abuse or a problem that requires intervention unless it becomes excessive, obsessive, or interferes with other aspects of their life. If parents have concerns, talking to a pediatrician or child psychologist can provide reassurance and guidance.