This is simply creating individual responsibility. A few will spend the money badly but most will realise that they need it for necessities. The whole point of the system is that it is flexible rather than limiting in the way other subsidy systems are. It should be considered that while some may misspend their money as suggested on drugs others may find ways of investing it so that they make more money and pull themselves out of poverty which then saves the government in the long term. Ultimately however it is the government that controls the flow of money; if someone is misspending it they can always halt the transfers.