Yes, because gambling cannot be used as a stable source of income, management becomes difficult.
Cannot? That tells it's impossible, I beg to disagree with that as I believe it's possible but chance of making ourselves successful is very slim. So let us not use the word cannot or impossible.
Are you being sarcastic here or you actually mean this? PythagoraZ wasn't talking about being successful in gambling but rather, he's talking about making it a stable means of income. Being successful in gambling is of course very possible but you can not definitely make it your stable source of income. The word "stable" means steady and continuous. Your winning in gambling is not always guaranteed no matter how expert you are, this automatically make it impossible for someone to rely on it as their source of income.
Of course, I'm not. Maybe we differ on the definition of stable because what I understand about stability in a gambling perspective is not winning daily or weekly, but at least you'll end up winning in the long run. Just like a casino, they don't win on a daily basis, but they win in the long run. I know it sounds impossible for most of us, but there are people I follow doing sports betting, which they call pros, and they are showing how profitable they are.
Sometimes they will have a losing streak, but since they have a decent bankroll to withstand that kind of situation, they were able to recover until, in the long run, they will still end up profitable. If you live within your means, I think you can survive with your gambling income, considering you are profitable.
I quite understand you and you are right, it's all about how we view and define it. Some could measure it periodically, while others could view it in the long run, and what the account history states would be the decisive judge in this regard. Besides, I love the way people are now talking about sports betting, it is actually the best. I got to discover this myself and I have been so kin with it as I risk more than 95% of my gambling money to it and 5% to the casino section. Do you know why? It's because I am the kind of person that faces reality as fast as possible and I do not need people to point my attention to anything before I get to discover it and adjust as quickly as possible. Due to this, I've always known that money-making can be realised easily in my sports betting while casino betting is always related to my fun and both have been great in performing these tasks since years ago. This is actually what is helping me not to have any regrets in gambling and once I bet well and carefully, and also manage my gambling account very well, the rest will always be a good story.
Now back to the argument, I love it better when we judge our success with the long-term view, though the period times like the daily, weekly, monthly and so on can be good as well, nonetheless, one thing we should know as an issue is that it could mount pressure on us when we are losing due to our expectation periodically. This had happened to me before when I had good weeks of gambling but when my gambling was at a loss in 2 weeks I started having the emotions. But the moment I stopped evaluating myself periodically but cared about what my portfolio states at a random long duration of time, everything changed and I had to be stable and in profits even though it is not a huge profit as many would want it to be, but notwithstanding it is still better than losing.