That is the law, brother, when you play, the first thing you should imagine is how much money you are willing to lose, so that it does not become unbalanced later, because things can change anyway,
Right we are gambling just with a hope to win otherwise we are putting all the funds at stake through our wager so we should be prepared for the loss and don't fee too much bad about it afterwards.If you win that's your luck but be prepared for loss scenario always.