In other circumstances, less happy, ejaculation is delayed by the inexperience or indifference of one or both partners,       regardless of their age. When there is nerve damage, the ejaculatory reflex is abolished or delayed.

Paraplegic after a road accident, a man had a total impotence. After many months spent with the psychiatrist where he was much discussion of the relationship he had had in early childhood with his parents and grandparents, and in desperation, he consulted a surgeon. Nerve damage was established. The surgeon placed him silicone implants in the penis. Six months later. The erection was no problem, but  ejaculation was delayed ! However, his partner did not complain.