Sissy forever 1º class
Most women agree that they prefer thicker over longer penises because often they feel discomfort or even pain when being penetrated by a long penis. Usually the penis isn't actually too long however. It is rather the fact that the vagina was not ready to receive a lengthy penis. A vagina needs to go through a few different stages before being ready for full penetration.
When a vagina is in relaxed state (no arousal) the cervix rests at about three to four inches away from the vagina opening. The vagina walls are collapsed against each other, leaving hardly any space in between. During arousal the vagina walls start to secrete a lubricant causing wetness and then the first few inches of the vagina expand a little, creating some space. Many guys take this as a sign that the woman is ready to be fully penetrated. Doing this with an average to long penis will hit the cervix frontally, causing discomfort or pain.