You have to always use stop loss because probability of getting harmful event that have potential to wipe out your account is very high when you spend long time in the market.I don't trade without a stop loss. I think you need it to minimise any losses.
It would be better to make use of the Stop loss in our trades so that we can limit the losses.You have to always use stop loss because probability of getting harmful event that have potential to wipe out your account is very high when you spend long time in the market.