The revenge thinking is what makes us play again and again even after loosing. I would stop betting right away if I cover my loss, this is what every gambler thinks at least.
Recovering our losses is a very normal attitude of gambler, first it's hard to accept defeat and you won't be able to have control on that feeling on the easiest way. And also fear of wasting your chance to win is also a reason why we keep on gambling even we lose all the time. But if you are an experienced gambler, you know when to stop.
You are right, recovering our losses is normal for gamblers, but it is also good if they think that, it is just our paid of our having fun. Playing again and lose will also another loss if we continue playing we will just lose another and another bitcoin/money. Maybe losing money that we can afford to lose is enough to stop than wait until you lose huge btc/money in your wallet.