After 50 years of age, sexual desire is strengthened, but no pleasure, may be a normal physiological response, may also be caused by certain genital diseases, such as circumcision, prostatitis, etc., will make men in the sex life without pleasure. 1. Physiological response: the androgen level in the body of a 50-year-old man may decline, leading to insufficient testosterone secretion, affecting the sexual function, resulting in sexual desire, no pleasure, belonging to the physiological performance. With age, the symptoms will become more and more obvious. 2. circumcision: If the foreskin is not removed in time, it affects the normal sexual intercourse of men and can lead to a short time of sexual intercourse, which can cause premature ejaculation in serious cases. 3. Prostatitis: When prostatitis is serious, it causes congestion and edema of the prostate. The result will be an abnormal reaction during erection, which will affect normal sexual intercourse, and even if there is sexual desire, it will affect the pleasure. If you have a sex drive after 50 years of age, but lack of pleasure, it is recommended to consult a doctor as soon as possible to understand the cause of the disease and then targeted treatment.