yes this is the main reason in my opinion why ppl lose their money, they have big hopes and no mercy from forex, ppl initially start from small lot sizes but by earning a little money too they become more confident and in their greed and lucky thoughts go to trade big and then lose, some losses also because they cannot understand trends (predict) and so they lose, some people also don't use parameters and depend on themselves for everything so again they lose and the main reason is not using sl who can be a savior. and Yes, you are right that if bank intervention occurs then the trader has no mistakes from loss. It will always be good if the trader tries to be vigilant when such things will happen so that he can avoid them and secure the account from losses.