Rational choice theory is silent in attributing individual motivation for taking action and making a choice (Elster, 1989), because contextual theory is again opposing the rationality of choices. The action of accepting a marriage proposition in some cases may be completely motivated by unacceptable factors and still considered to be rational in circumstantial scenarios. This disproves the universal acceptance of rational choices to be called as rational. Above all, it is absolutely essential to identify what are the rational results that come out of marriages to select what are the best actions and choices to be made to give the rational results. In short, the choosing of a rational action is primarily to meet an end which is a rational situation and good and uplifting the individual and society at large. Again, the uplifting of individual and society has to be analysed and rationalised by comparing them with other theories of philosophical nature which then leads finally to ethical and moral standards of human conduct. Thus, rationalisation is directly or indirectly linked with the ethical and moral conduct of humans in all deductive analysis, and it is to be nurtured and improved with consistent reasoning on the basis of context, circumstances, and changing social structures and its beliefs. Social structures are varying in different regions, culture, and religions seeking approval from the larger global community (Lichbach, 2003). This differentiating character of social structures makes the rational choice theory more unenlightened, due to its association with varied ideas of individual actions and motivations which many be rational or irrational. Some cases may require someone to lie for saving a marriage and that action may be considered irrational, similar to the ethical and moral theory, but it may add up to the social structure which relies on rational individual actions. This makes the social structure more open and people accept lying as a rational choice since it is serving an ulterior motive of saving a life of a particular gender. The marriage decisions are mostly private and personal and are seen to become more personal rather than family based across the world, because of shortening of distance of everyone in the world and the world getting more crowded and closer to one another. Since the institution of marriage lies fundamentally in individual choices of both partners, the rationality of their decisions remains debatable since their individual motivation and their intent is never considered in defining their choices as rational. However, if their choices and decisions end up serving the individuals and society in general to an extent that if such actions when embraced to be taken as social structure actions it will maximise the happiness of all, then their actions can be termed as rational. Thus, rational choice theory is the most elastic and waves with the ethical and moral foundations of individual conduct and the happiness generating influence of the social structure beliefs of marriage.