Sometimes I wonder how they were able to treat gambling as their main source of income. Is it their skills? Strategy? or knowledge Gamblers who excel and make money through gambling are really a risk taker. They're losing but their winnings can covered all their losses thus they still have the edge, and be called professional.
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They just want a faster return just by gambling so sometimes they can make income even though it's uncertain because gambling is only luck that they will get, even if a poker professional he won't be looking for the best bet but wants to play with what he is good at. The gambling game must be skillful and fun, even if he faces the risk he is ready for his nightmare.
For me gambling is not a good source of income but a game with a hobby that I like.