In this game it is less advantageous to be a rogue and use lockpicks. As I mentioned earlier, to pick a lock, you must invest points into the skill as well as have a consumable item (lockpick). Traditional thievery suffers double the penalty for no clear advantage when compared to bashing it open or blowing it up.
Even going back as far as table top games, wizards had a "knock" spell that would unlock things, but they had a limited number of spells they could cast per day. The brawny fighters could bash containers open but risked damaging the contents and their weapons. The thieves took their time to pick the lock, their risk was failure, fumbling and breaking their tools, or triggering inlaid traps. Each had a risk, a penalty and each had their just reward. In D:OR it is more beneficial to avoid taking a rogue altogether, take a cleric and a wizard instead, you will have a larger repertoire of spells to suit a variety of situations and the cleric can just bash open any locked containers. The fact that the Thief is useless really bugs me because I really love playing thieves in the traditional table top manner.