A family earning two incomes has a greater amount of financial resources available to it, and therefore should have more disposable income as well. While this idea seems reasonable on the surface, the reality in many two-income homes is exactly the opposite. Two income earners often create a higher fixed-expense baseline for themselves. Two-income families purchase larger homes and tend to own more, and newer, vehicles than do single-income families. Two-income homes also have to purchase child care if they have small children in the home. According to E. Warren, author of "The Two Income Trap," the time stress on two-income-earning families also creates conditions in which parents must spend more on convenience food and ready-made meals, entertainment services, commuting costs, career clothing, and household services, some of which they could handle themselves if one parent were home full time.

More money coming into a home can mean a more secure financial future if the partners adopt wise spending practices, and plan. However, in the bubble of two continuous income streams, working adults often find it easier to put off the hard choices of delaying gratification today to save for a future retirement. Those who have one income are often more aware of their limited resources, which leads to making wiser financial decisions with an eye toward tomorrow and planning for a future retirement. However, with proper planning and conservative decision making, two-income homes can prepare for a more financially successful and leisurely retirement.

The biggest disadvantage of the two-income home is the stress created between two full-time career parents. The struggle for effective time management usually rolls downhill, and lands in the children's lap. According to the U.S. Department of Health and Human Services, young children learn higher levels of self-esteem and self-confidence when they have both parents available to care for them. They also score better on cognitive development tests when one parent is in the home full time for longer periods before returning to the workplace.

Now referred to in many professional journals as a “role overload,” stress that working parents in dual-income homes feel presses in on them as they struggle to balance career, family, home, and personal lives. Even in a home without children, two income earners have little time to relax and build their relationship after spending 40 to 50 hours of personal energy on the job. Add children to the mix, and for 18 to 20 years, the parents in two-income homes have even less personal time and more responsibilities. Like the proverbial hamster on a wheel, parents juggle home, family, children, relationship, job, social lives and home maintenance tasks, and do not have enough time to connect relationally with each other or their children.