Scotland should absolutely seek its independence. Given the oil wealth and reserves of the nation as a whole, its per capita income and wealth would potentially rival the top ten countries in the world. Why should that money and wealth be redistributed to the other members of the United Kingdom?
Scotland is recognized as a part of Great Britain. Residents of Scotland have the privileges of citizens of Great Britain. Scotland has its own long and storied history. Its residents retain a great deal of pride in its Scottish legacy while still retaining the rights of citizens of Great Britain.
The United Kingdom represents one of the strongest, most influential countries in the world as part of the U.K., Scotland shares in this distinction. As an independent nation separate and a part from the U.K., Scotland would use a considerable amount of the clout, prestige and power it enjoys as part of the unified country.
Scotland is its own nation. As a part of the United Kingdom, it merely acknowledges England's queen as its own. Although throughout various periods in history the relations between the two countries have been tumultuous. They co-exist somewhat peacefully now. To petition for independence would be a costly venture that may have lasting negative political and financial impacts for Scotland.