Economics is the study of scarcity. The textbook definition of economics is "Economics is how to satisfy unlimited wants with limited resources." Economics studies how individuals satisfy their wants.
At the Y, I heard two men talking and one said, "No matter how hard I work I just can't seem to please her." I was reminded of the Toby Keith song, "You Ain't Much Fun". In the song a man quits drinking and his wife has him mowing the yard, mending the fence and hundreds of other household chores. The man in the Y found out that as soon as one want was satisfied, another want took its place.
So often, I hear men say, "She's all I want". These men aren't thinking economically. If economics is correct, he'll want someone else. Of course, it doesn't work like this. Many couples are happily married for life. There must be somethings that economics doesn't predict. One might be the economy.