Regarding circumcision, some males are born with a condition in which the foreskin is too tight (a condition known as phimosis), which can cause pain during erections or while attempting to masturbate. In such cases, undergoing circumcision at a mature age can be a beneficial solution to alleviate discomfort and enable a more pleasurable experience. However, a potential downside of the procedure is a reduction in sensitivity. That sensitivity loss can vary, with estimates ranging up to about 20-30%, though this depends on the individual.