Sometimes, yes. But frequently if price is trending towards your stop, then it will continue trending in that direction after it hits your stop. It doesn't have anything to do with lack of confidence. Most traders will have 40-60% of their trades end up losers, so you need a mechanism to get out of a loser. How are you supposed to exit a trade if the price keeps running away from a limit order?
the same way Walmart does it. Put it on sale at an increasingly better price for the buyer. At that point all you are trying to do is reduce your exposure. Maybe next year you can sell them again at a better price.