The fact that an arranged marriage is actually preferred in many cases in India, and may even indeed be a healthy and happier form of love than the marriages experienced in the west comes as somewhat of a shock or at least a surprise to most.
Also, since the majority of Indians are Hindu, and Hindu’s believe strongly in astrology, the perspective couple’s horoscopes are be analyzed and “suitably matched” or the marriage cannot take place.
Additionally, the father will want to make sure that his daughter is marrying into a good family, so a lot of investigation takes place before the arrangements are made.
A relationship not bound by marriage is more easily broken for the smaller nuances in life.
After marriage you tend to accept what you have rather than look for someone better as people often do while courting or dating.
Many people have a pretty major misunderstanding of the topic of arranged marriages and in fact have a fairly negative attitude regarding arranged marriages.