Government does have an obligation, in my opinion, to care and assist for those who cannot care for themselves due to circumstances beyond their control. Naturally government only does so because if it doesn't, enough people might get mad and vote some of its components out of office! Government is pragmatic, not altruistic. The main reason government operates on the basis of what it believes is best for the country is because if the country fails, government will find itself out of a job.
It's all about self-preservation.