Sex plays a major role in a man's life. No matter how conservative a man can be, he still couldn't avoid thinking about his contribution in the society as the main character. His ego always tells him that without him women could not have the possibility to multiply alone, which feeds man's sexuality as a whole.
As part of being a complete man, the penis is the most important part in the man's body. A man would care less if some parts of his body may be disabled, because they are still able to cope with this type of disability. But if their penises don't pass their normal standards, even though it has to do with genetic traits, they would do everything to enhance it for the sake of the manly egos alone. Some men tend to detached themselves to topics about penis sizes, especially when they have penis smaller than what they consider the average size for it greatly affects their self esteem and confidence giving the psychological fact that having enlarged penis is a necessity.
As it is normal to be very conscious about having an enlarged penis, the women, on the other hand, gets attracted to their obvious manhood. The larger the penis, the more it attracts women. This is the main reason why men these days think of having . Thus they look for ways to have it done. Men also believe that if they have larger penis, their wives will have more sexual satisfaction and encourage them to have sex more often, enabling the couples to produce more offspring. Wives, too, won't have reasons of blaming their husbands for not giving them sexual satisfaction because of a small penis.
As a whole, the concept of being a man comprises of his knowledge and most important of all, his sexuality. Therefore, without the penis, it will not make a man complete, the size as a second important factor, to complete his ego and high self-esteem to face the world with pride and utmost confidence, not just with women, but with the society he belongs to.