You guys are forgetting an annoying encumberance system where in order to pick up the heavy object (example: plate mail) you have to drop a light weight object (example: ring) because you are out of item slots.
Worse: Both encumbrance and grid inventory management. Can’t pick up that plate armor because you need to re-Tetris your inventory around to make room for the 4x6 plate armor icon. And no, you can’t rotate items to make the armor a 6x4 instead.
And after you organize your entire inventory to fit the armor, you still can’t pick it up because it’s too heavy.