I don't see how it would be wrong. If it isn't hurting anyone else or getting in the way of a person doing the adult things they need to do (go to work, pay bills, get appropriate food and shelter, take care of the creatures (children, pets, elderly) who may be in their care), then why not do it? It seems harmless enough as long as one does not get carried away and forget to come back to the adult part when necessary.