Actually, I suggest you do yours - because there are some strong arguments that adult circumcision is actually medically preferable to infant circumcision.
Perhaps rabbi thinks infant circumcision is best, but you know maybe that's because he has an agenda.
Here are some factors:
1. More precise with better outcome. Circumcision of an adult can be more precise and less risky than for the infant. This is because the adult penis is fully formed. Many plastic surgeons operate on the penis in the erect state because this way it is clear to what extent the skin is stretched during erection. In the infant, this more precise method cannot be employed. Also, based on the knowledge of his own penis, the adult patient can specify how much tissue to remove, the infant cannot. In terms of how much tissue to remove, there is much more guess work involved in the infant and often too much skin is removed. In adult circumcision precise instruments are used. In the infant, usually more cumbersome and less precise instruments like the Gomco clamp are used. The results of operating on a fully formed penis, in the erect state, with precise instruments by a trained surgeon, benefit the adult and not the infant.
2. Reduced risk of injury. For the same reasons mentioned above, injury to the penis is less likely in adult circumcision than in infant circumcision. It is less likely that too much or too little tissue will be removed and the chances of lacerating the glans itself are also minimized. Scarring is also reduced in the adult.
3. Reduced loss of sensitivity. Because in the adult, the penis has had many years to develop with a foreskin covering, the glans is fully sensitive at the time of the circumcision. The glans has grown with its protective covering and the foreskin has already separated naturally from the glans. This spares the adult some of the sensitivity loss that occurs when circumcision is performed at birth. At birth, the foreskin must be torn away from the glans to which it is normally adhered. Then, the denuded glans of the infant spends much time exposed to caustic urine while in diapers. In adult circumcision this early damage to the glans is avoided.
4. Personal choice. With adult circumcision the patient is making a personal choice to have himself circumcised. He has the option of comparing the pros and cons and has had the opportunity to know what having a foreskin is like. This eliminates the "lack of choice" objection made by critics. With elected adult circumcision, critics see no violation of rights.
5. Reduced potential psychological effects. With adult circumcision potential psychological effects are reduced. This is because the patient understands the experience. He knows why it is happening and that he has chosen this. Anesthesia is used in the adult and is usually omitted or ineffective in the infant. In contrast, the infant has an experience of inexplicable pain and terror which he cannot rationalize as an adult. Some speculate that this intensely painful experience for the infant can lead to problems later on. Although on the surface it may seem that an infant is less sensitive to or unaware of the circumcision experience, he does experience it fully and because of his very formative and psychologically sensitive age, the experience is thought to be potentially more impacting than it is for the adult.
source:
http://www.cirp.org/library/anatomy/garcia/