The option of marriage will always be an available personal choice just as religion will always exist. Traditions, such as marriage, will continue to be handed down through families, and cultural and religious influences through upbringing. Although marriage is predominantly entered into for spiritual reasons, there are practical, economic factors that play a part in the decision to marry.
The term "gold-digger" relates to the concept of marrying for money. Prenuptual agreements have become part of the documentation associated with marriage when one partner holds considerable wealth. Combining two incomes allows couples greater shared assets and a better standard of living than as a single person. Marriage provides for greater security when raising a family.
Economically, weddings promote cash flow and commerce. Traditional weddings are extremely expensive, from the invitations, gown, flowers, cake, gifts, entertainment venue and honeymoon. Marriage is good for the economy.
If the marriage doesn't survive, and one out of two do not, the financial costs in lawyer fees further benefits the economy. Generally, divorce involves establishing at least one new household.
As in all areas of personal choice, marriage should and will remain an available option.