Gambling addiction is a big addiction. And behind this addiction the main reason is money or BTC, you lose money but again you go back because you think that may be you can regain your money. In this world everyone have this greediness and you are not out that. Everyone think that money can give all the happiness that why everyone ramping behind this. so its simple.
Yeah right, that makes us addict is always curious, if winning is certainly curious to continues to win and thinks making money is easy (not need real work), but when we lost we will be curious to take again our money that is wasted.