For some men and their partners, not having children is their wish and firm decision. Medicine historically has been paternalistic about this and not offered sterilisation to men or women who did not have children. We are stepping away from this thankfully. Vasectomy can be performed on men who have not had children. Medical indemnity insurance does not permit Direct Access Vasectomy to offer a vasectomy service to men under 25 though. Follow up studies of vasectomy indicate that regret and reversal requests are higher for the under 25 age group. For men over the age of 25 who have  considered their wishes for children and know they will not want children, or completed family planning, direct access vasectomy can be a great option. Ensure you know that vasectomy is considered permanent contraception. Reversal procedures are not guaranteed and have a significant cost ($15,000 as a private procedure). When counselling child-free men I make sure to mention these issues and to raise the idea of sperm freezing in case their mind changes or a future partner desires children.