The entire procedure usually takes 20 - 40 minutes for both methods. After the procedure, you will be sore for a day or two. You should use a tight athletic support and ice packs for at least 24 hours to avoid swelling. You must avoid heavy lifting for at least 48 hours. It takes a day or two to get back to normal.
Sex can resume when it is no longer uncomfortable.
Therefore, it does not affect your masculinity or ability to achieve an erection. Sterilization IS NOT castration. Castration is the removal of the testicles. Since a vasectomy does not involve the nerve or blood supply to the penis, there is no reason for impotency after the surgery. Your testes will continue to make sperm.