For some furniture in a certain room like an apartment bedroom that very limited in space, some people (like me) sometime need to be removable easily. That is why office chair has wheels or ball transfers. They offer mobility fir office chairs. But sometime it is not only chairs that need to be moved easily. Tables, desks or even cupboards at some point need mobility.
Maybe it’s a little bit funny to have casters on tables or wardrobe, but it is useful if you often re-arrange your interior.