Situation: I wanted to get the height/width of an object. Simple: Open the object properties. Now I wanted to copy the values to use in another object properties. Problem (Not so simple): The values in the Object Information field are not selectable (except the Name field). This means you cannot copy the data with CTR+C. Instead you have to remember the values. And because the object properties are Modal, you cannot select another object in the scene to enter the data into--meaning you have to type the data into a separate text editor, write it down, or remember the values (which is not often easy and made more difficult by the fact that you may need to remember multiple values).
I propose making the values selectable so that you can use the data more accessibly.
Also see this suggestion to Make Object Properties Non Modal and dockable.