Anxiety about penis size can be a barrier to enjoying sex with a partner. A therapist's guide for the treatment of body dysmorphic disorder. They maybe view themselves as being in a similar situation to the tortured one that the mythic figure Tantalus found himself in.
How common is micropenis?
Two prominent reasons are that that many more people's information is typically represented in a sampling distribution than in the testimony of a few women, and that typically sampling distributions are more representative of the true nature of the population than are the opinions or observations of a few women. Answering that question gets directly to the concept of reference points; that which you are comparing your penis against.