That is a pretty easy answer. Most women are naturally gentle and submissive due to estrogen and oxytocin plus society being more strict on the way girls should behave. The more submissive feminine girls were raised by strong masculine fathers who were great leaders and knew how to take care of her so she has great trust in men. Men are testosterone filled and associated with aggression so its hard to feel submissive when presenting as a male. Thus, CD like to present as a dainty female which makes it much more easier to embrace and feel their submissive side in activities such as bdsm.
