There are the big-ticket items — your rent or mortgage, your health care, maybe a student loan. You pay for food, and household items like toilet paper and garbage bags and lightbulbs. You buy furniture and sheets and dishes. Now imagine paying for all those things completely on your own. This is your life. All the expenses of existing in society, on one set of shoulders. First, we need to define a clunky but essential term. Single or solo-living people may or may not be partnered with someone in the long or short term, and they may or may not be parents, but they all live and bear the responsibility for their bills alone.