I have seen a guy loosing 1000 bitcoins in just one bet on justdice and another guy loosing more than 300+ btc on pd. but at that time btc was much less than 200$. This guy is really crazy or too rich to afford that much of money.
I agree seeing someone to bet 50 bitcoin when the price is already on 6K$ I really cant comprehend what kind of reasong was that ? maybe he was just crazy or making stories , Owning already a 50 worth of bitcoins make you already rich I Just cant understand why you need to be richer ? are you not contented in your life ?