It's an interesting visual approach to use a bench, made for more than one, to discuss loneliness.
Humans are by nature gregarious. We like to be with others, to belong, to be part of a community (be that family, village, football supporters club or work force). It isn't surprising then that we fill our leisure spaces with seating made for more than one.
Think of a bench. It could be a park bench, a garden bench, or even a church pew. Add a cast to your bench of one or more. What would your bench story be?