Circumcision and sexuality
Sigmund Freud (1920) asserted that circumcision was a substitute for castration, suggesting a possible connection between castration fears, neuroses, and circumcision. Documented cases exist of circumcision resulting in a life-impairing level of castration anxiety (Ozturk, 1973). More recently, Immerman and Mackey (1998) described circumcision as "low-grade neurological castration." They argued that the resultant glans keratinisation and neurological atrophy of sexual brain circuitry (due to loss of sensory input to the brain's pleasure centre) may serve as a social control mechanism which produces a male who is less sexually excitable and therefore more amenable to social conditioning.
Indeed, for centuries, circumcision has been used as a strategy to reduce sexual gratification (Maimónides, 1963, p. 609). According to Saperstein (1980), quoting Rabbi Isaac Ben Yedaiah, as well as the empirical findings of Bensley and Boyle (2001), and O'Hara and O'Hara (1999), heterosexual intercourse is less satisfying for both partners when the man is circumcised. Due to the neurological injury caused by circumcision, and the resultant reduction of sensory feedback (Immerman & Mackey, 1998), it is highly likely that circumcision may promote sexual dysfunction such as premature ejaculation, and consequently, also the reduction of female sexual pleasure (cf. Money & Davison, 1983). The possible deleterious effects on social and marital relationships (cf. Hughes, 1990) may be considerable, especially in countries where most men have been circumcised.
Structural Changes
Among the structural changes circumcised men may have to live with are surgical complications such as skin tags, In addition, Immerman and Mackey (1998) and Prescott (1989) postulated that severing of erogenous sensory nerve endings in the foreskin during infancy leads to atrophy of non-stimulated neurons in the brain's pleasure centre during the critical developmental period.
Gemmell and Boyle (2001) surveyed 162 self-selected men (121 circumcised; 41 intact) and found that circumcised men reported significantly less penile sensation as compared with genitally intact men. Participants rated their current level of penile sensation (on a scale from 1 to 10) as compared with that experienced at age 18 years (allocated 10 out of 10). Circumcised men complained significantly more often than did genitally intact men of a progressive decline in penile sensation throughout their adult years--presumably due to increasing keratinisation of the exposed glans and inner foreskin remnant in circumcised men. Gemmell and Boyle also found that a significantly higher proportion of circumcised as compared with intact men reported bowing or curvature of the penis (also reported by Lawrence, 1997), shaft skin uncomfortably/painfully tight when erect, and scars/damage to the penis. Although the frenulum was reported as an area of heightened erogenous sensitivity, in the typical circumcised male, either no frenulum remains or only a small severely damaged remnant exists. The complex innervation of the foreskin and frenulum has been well-documented (Cold & McGrath, 1999; Cold & Taylor, 1999; Fleiss, 1997; Taylor et al., 1996), and the genitally intact male has thousands of fine touch receptors and other highly erogenous nerve endings--many of which are lost to circumcision, with an inevitable reduction in sexual sensation experienced by circumcised males (Immerman & Mackey, 1998; O'Hara & O'Hara, 1999).
So.... snip the skin off, and you might get the pleasure of having skin tags, penile curvature due to uneven foreskin removal, pitted glans, partial glans ablation, prominent/jagged scarring, amputation neuromas, fistulas, severely damaged frenulum, meatal stenosis, and excessive keratinisation. I guess it's 6 of one, half dozen of another huh?