If you do not earn, where will you even see the money to gamble? If you weekly income is not enough, that means it is foolishness that will make such a person to gamble. But if you are able to earn enough and safe and able to use like 1 to 5% of your weekly income to gamble without affecting you and your family financially, that is wise.
Gambling though is a risky game that the chances of winning and losing is in equilibrium but however in other for one to have a possibility of winning, it requires a steady income.
Having a steady income does not guarantee that you will have possibility of winning while gambling.