During the Jubilee, all land is returned to the original owner. Someone who bought the land that now had to be returned might feel disenfranchised, a stranger, in a sense, from land once considered his own: “The land shall not be sold permanently, for the land belongs to Me, for you are strangers and [temporary] residents with Me” [Leviticus 25:23].
Isolation is a terrible thing. Our Rabbis differentiated people from other forms of life by calling human beings m’daber — the species that speaks. We require conversation no less than we do food and water. Talk is food for the soul.