One of the most common uses for a full body sex doll, especially a fat sex doll, is as a source of companionship. In a world where loneliness is a growing concern, having a realistic, human-like figure can provide comfort and emotional support. The tactile presence of a full body sex doll offers a sense of closeness that can alleviate feelings of isolation, especially for those who live alone. The soft, curvaceous form of a fat sex doll, in particular, provides a warm, comforting presence that can be incredibly soothing during times of loneliness.