The practise of marriage

I have often questioned the policies and the culture of the West and to be true have been rather critical about them. Lately though my standpoint seems to be changing about atleast one practise prevalent there that is the freedom to have sex.
India being a traditional society, sex before marriage is still considered to be taboo and people are not really open about it in front of their parents or prospective bride or groom. One essential reason of people marrying in India is probably sex, cos they can have sex only after marriage and as it is one of the primary needs ,marriage becomes a necessity. What I mean to say is it becomes a sort of compulsion and not choice. Look at the west ,where hardly there are virgins before marriage. This means when they marry ,they don`t do it for that physiological need of their`s but because they want to be with that person more than they can do now and possibly because they love each other`s company. The marriage in this case is by choice.
Now choice is always better than compulsion, this is the essence of being free and having the right to freedom. A marriage should happen when you need somebody else to move with you in your life, when you feel there is a need of somebody else taking care of you and you taking care of him/her, when you feel you need somebody else`s advice in decision making and when you feel you need to have children. The people in west probably marry when they feel such a need , and Indians probably feel or generate such need after they have married.