It is not really considered as something bad depending on how you see it. If you dont gamble at all then you might see it as something not important that might destroy your life but if you gamble then you can find that there are some essence that you can find from it. You can have fun from gambling and that is one thing that you cant get elsewhere
even in every religion or country, gambling is a negative game but people still continue to play and for those people, they don't care about they can win or not, they only want to play. and if gambling was not introduced, then people still played but they will not use the money for a bet and only have fun with their friends. we know that gambling games can destroy many people life's but as long as we don't follow this, I am sure that we can save our own life.