I lost just over 9 bitcoins about 3 months ago and £54,000 all in the same month because of bitcoin, long story... 
i personally lost bitcoin for so many times but only in gambling, with my on fault, but never lost bitcoin because of investing in bitcoin, just like other people who lost bitcoin in previous panic selling, i have a good amount of bitcoin and i am holding it for the price increase, although i bought it in different rates some are less than 400$ but still i am holding it for the price increase, and nope that it will give me a good profit.Not alone you but everyone everyday lose in gambling but they do not understand that lose and do not care that their family will remain helpless if he lose all of his wealth, we have to play gambling only for entertainment and not for investing all of our money.