Birth Control is a controversial issue no matter how looked at, as it is the taking of one or more extra precautions, devices, or most popularly medications that are followed in order to purposely prevent or reduce the likelihood of pregnancy after sexual intercourse. The major controversy here lies I think in the underlying issue of abstinence over sex for pleasure.
It is being said that in today's society that these methods of birth control are considered to be an essential component of family planning. The idea of birth control is to prevent initial fertalization, rather then get into a situation of abortion, which is actuality the termination of an already established pregnancy.
Controversy is everywhere but more so in the methods of birth control which actually prevent the implantation of an embryo if fertalization occurs, which is commonly known as the "morning after pill". Family planning facilities have greatly helped to reduce the birth rates in developing countries which has many advantages. In the past the most common forms of birth control were barrier methods, which we know today as "condoms", but also the attempt to have intercourse with a woman during a "non-fertile" time. The latter method might have proved to be a good idea, however, it wasn't until the early 20th century that scientists were actually able to sort out the rhythm of the menstrual cycle, with that and the inconsistencies in every individual meant that this method was completely unreliable.
If Birth Control is an issue on your mind, I would recommend talking more time to research and figure out what it means to you, and which method is right for your individual situation.