The appropriate contraceptive methods not only prevents unwanted pregnancy but also can offer protection against STDs such as HIV, chlamydia, gonorrhea, and herpes infections. The risks of contracting STDs. If you are not in a monogamous relationship, the possibility of contracting STD is much higher.
Barrier methods offer the best protection against such diseases.
If you already had children and don't want children in the future, you may consider sterilization.