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No matter how deep you are in gambling never you sell a property because you will surely regret it when it doesn't work the way you expected.
Have you ever sold a property to play gamble and afterwards finds it difficult to replace that same property again?
The examples you cited above are so unfortunate, that they are not called for. It shows the level at which some children are spoilt and how some people are just idiots in nature. Is it a must you gamble? You still have the parents that were feeding you, or at least cared about you, but all you can do is to give them pain, after all they have done for you? This is so sad and I can't even reason how some people behave, it often dawns on me that they are possessed, because, without that, I do not know why they would do some unspeakable thing.
In fact, it is a big shame on them. Before we do anything, we must weigh our options, gambling is never an investment, if you will do a thing like that at all, do it on something that people and your parents would be proud of. But those guys need desperate money and they need it very fast, that is why they often turn to gambling which has never been the solution. Imagine, if the guy who bought the land bought it and ran away for 3 years, in the next three years, the land could have at least double the money he bought it with depending on the choice of place. By that, won't the parent be happy and later forgive? Even though I do not like it entirely what the guy did, one should still be reasonable about what they channel money to if at all it happens.
As per your question, well, I will not do anything irresponsible because of gambling and I will not use the money I can't afford to lose for gambling. I've been strict in this regard and it is helping me as well.