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Is there any valid reason to continue gambling?
I think gambling is very addictive for that people contentiously playing gamble despite losses huge money. May be they think one day their luck will work and they will be a rich man in a night. But it is not so easy to be a rich man in a night.

Unless you win in a lottery. That will change your whole life depending on how you are going to spend your winnings. I think gambling is addictive only because there is money related to it. Many people thinks that it's their one way ticket to success not thinking the risks that can happen.