House edge is normal but for me the reason why we lose in gambling is the frequency of us gambling. Let us just say that we won five consecutive times, do you think we will stop gambling? My answer is no, we would still gamble until we lose.
Yes, we will not stop gambling because we want to make a big win again and again. That will make us play more because we expect that in the next round, we will going to be the winner again. But the truth is we will going to lose in the next round, and they will get our win money back. But if we can realize that what we win is enough for us and we decide to stop gambling, then I think we can save that money, and we can leave the places without any problem.
Human greed is really difficult to control. We are not easily on what we have so we crave for more. We think we are lucky when we are having winning streaks on gambling but when we start losing we try to recover it until it's all gone.