I don't think that we really need to gamble because gambling doesn't really give our basic necessity. Gambling is just for fun, to relax, but for others it is something different because they become addicted to it. But if you will learn to control yourself when to start and when to stop it means you can live without gambling.
True, to play gambling is not needed and shouldn't be considered as a need by any person. We all have freedom of choosing whether we will play or not, we should not be dictated by someone nor to consider playing very essential. I know how good it is to play gambling, how fun and relaxing but of course we should not neglect the fact that many people have done bad things because of gambling addiction.