Dual Income, No Kids - DINKS

A household in which there are two incomes and no children (either both partners are working or one has two incomes). DINKS are often the target of marketing efforts for luxury items such as expensive cars and vacations.

Investopedia Says:
Couples living in a DINK household are thought to have more disposable income because they don't have the added expenses that come with children. Contrast this with "DEWKS".

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Market segment consisting of two-income couples without children. DINKS are considered a relatively affluent group with a greater percentage of discretionary income than other segments. DINKS are often targeted for luxury item promotions including vacation travel, luxury cars, gourmet foods, electronics, and personal services. In many cases, DINKS will migrate to other market segments, such as couples with children, within a few years. Some marketers are focusing their attention on gay couples who are a more long-term and less-promoted component of the DINKS segment. Philip Kotler of Northwestern University proposes dividing the DINKS segment into upper class (U-DINKS) and lower class (L-DINKS).