It is not our responsibility to help the poor but we can do it voluntarily out of love. If it is necessary to help a poor family, then I will sacrifice my one-month gambling habit to help them. I could stand and continue with life even without gambling but it will be hard for me to see a family who is suffering because of poverty. That will not solve their problem but it could ease their suffering.
A sole responsibility to help one another in time of peace and penury. Gambling is just a game that we could put our money into and play bets with the hope of making profits. In case we met ourselves in this kind of condition, what we need to do is to divide the fund if possible to the person that needed the help and use the remaining fund to go gamble which is very wise and better than ignoring such person that needed the help. Two things is likely to happen to us as a gambler which is we can either gamble with the fund and make profits or gamble with it and lose all the funds.