HandEFood, not everything can be instantly stashed or equipped. No, let's put it in a different way - it makes no sense. Stashing loot is quite common whilst I haven't heard of a player who doesn't at all times carry potions, two weapons (one standard and one spare), full armor on him and other things like a bit of food, lockpicks etc. So weight does affect the player (being weak You are unable to wear a heavy armor or wield a heavy shield. It does make sense to apply weight to weapons, pieces of armor or other commonly used items, doing the same with treasure is less useful.
