Today, there are many different forms of birth control, most of them being for the woman. These include the contraceptive pill, the implant or the intrauterine device (IUD), injection, barrier methods such as the condom (which is for the men), the ipill (emergency contraception), etc. However, all these methods come with their own success/failure rates as well as side effects which can be quite harmful.
A vasectomy for a man is one sure-fire way to keep pregnancy at bay and which does not cause any harmful side effects to the woman. However, it does eliminate the man’s ability to impregnate the woman, completely sterilizes him and is a method of permanent contraception. However, it is a reversible procedure if the couple decides to change their mind about having a family.