I feel bad when I read gambling stories that led to suicide. No mayyer how addicted someone is, please don't hide it from anyone. It's better for people to talk to you and help you with words of advice and encouragement because they go a long way. However, some gamblers prefer to keep their addition as a secret, and it's only when they're ready to let go that you can help them.
They keep their addiction a secret because if they speak up they might end up getting judged.... it's a cold world people don't care you till you are gone..but this doesn't justify the fact that he killed himself, suicide should never be an option, one of the main reason why people end up killing themselves due to gambling addiction is when they get into a huge debt that they can't pay, this makes them think of just taking their life... people like this should be helped and encouraged not judged.
These stories are really bad that people have committed suicide due to gambling addiction also you are right many people are depressed due to the burden of gambling debts and are forced to choose extreme paths like suicide. That is why these gamblers should not hide anything at all suicide is never the right solution to anything. They should take the help of a financial advisor to handle their financial situation. They can show them different ways of debt management and ways to restore financial stability and instilling hope in their minds and showing them that they are not alone can be helpful in bringing them back from the darkness to the light.