The problem I see is addiction and greed. Addiction for someone who wins a lot isn't much of a problem as it is for someone who has greed. Gambling can be tricky and needs self control. People gamble and earn some money, and because of greed, they throw in everything hoping to multiply it, but instead, it then fails. Most people fail to see this and that is why the average person usually have a little success before finally losing it to greed.
Even when you are winning a lot that doesn't mean that we can't start to lose all of a sudden. This is why we need to make sure to stop and put some aside when we are gambling even if we are winning a lot. I know it is hard to estimate when you will start to lose and this is why many people do not put their money aside, however it is obvious that one day we will all lose.I always put 50% into saving (vault or whatever else in other places) when I win 2x and then keep betting as much as I can. So for example I start with 50 bucks, if I reach 100 bucks then I put the profit 50 bucks into somewhere, then keep gambling with the other 50 bucks until it's gone. That way if I lose it all, I still have my initial deposit.
