Do not think that traders are not aware of these, but the thoughts of the potential profits to be gains from going ahead with such trade tends to becloud their sense of reasoning. Even before they lose their money (that is if they become unfortunate), you see them restless and constantly monitoring their trades. Even if they forget to ask themselves these questions, that restlessness they feel whenever they open a position is a clear sign that they will never be alright if anything bad happens to their money.