High leverage brings high profits, no doubt, but if your account is low a few pips movement against your position can wipe the account easily. Even a big balance account can face MC in case of a trend against the position due to high leveragetake risk but in my view we should not ignore risk reward ratio, if higher leverage increasing the chances of losing - better dont use it, and also you should set your trades in such a way that even if trade goes against your expectations you dont loose much and so i use a leverage that is less than 100.