My teenage son loves having a twin bed in the family room instead of a couch. I don't really know why, maybe because lying down is easier while playing games.
It started when we had to toss the old sofa and he wanted the larger guest bed for his room. I moved his twin mattress out to the family room to get it closer for a disposal run when he co opted it, and refused to let me buy a sofa. More money for my pocket, so ok.