I absolutely believe stoploss is important when you are trading in any capacity. As much as you might want to make a lot of profit, you need to protect yourself from excessive losses. I will like to term the stoploss feature as a risk management strategy and I advice everyone to inculcate the habit of using this feature as it could save you a lot of pain. Stoploss is important in times when the market is pretty unpredictable and we cannot keep up with the price movement. Your biggest mistake will be not to set up the stoploss feature. If you've not tried it till now, you should and you'll be thankful you did.