[whpalmer4]

Right, my point was that the combined group/ungroup button in the default toolbar set has no way of reliably determining in all cases whether you intend to ungroup those grouped items you have selected, or group them together. I have two objects in my selection, and both of them are grouped objects. If I click the button, did I want to group the two groups together into one supergroup, or peel away a layer of grouping? I suspect they decided that it was the most common use case that one would be repeatedly grouping to build up complicated objects, and if you needed the less usual case (ungrouping multiple selected objects), the menu or keyboard shortcut would do the trick.