Boys who can release lightly attatched adhesions always report a degree of pain doing this. The epithelium or adhesive layer between the glans and the inner foreskin renders the foreskin unmovable simply because it adheres the foreskin to the glans. Whereas the other conditions tend to be problematic and uncomfortable, adhesions are directly painful. The different degrees of adherence of foreskin to glans cause relatively severe levels of pain which are particularly noticeable in the erect state. Once an infant gains control of elementary hand movements he will start innocently exploring and experimenting with his penis and once his adhesions have released a boy can and will experiment freely and comfortably, at this point, he can start feeling completely at ease with this the most obvious physical component of his awakening manhood.
People avoid pain.
When the foreskin is adhered to the glans the proximity of this painful bond discourages experiments. Adhesions are accepted as normal in infants and very common in childhood. The pain from adhesions must be considered as a primary inhibition of the organ of reproduction and sexual identity. This is a situation which could excite considerable thought among psychologists. Maybe it is less influencial but it is certainly more fundamental.