We learn through scripture that where much is given, much is required. Another way we hear this phrased in our day is: "With great power comes great responsibility." The underlying truth is that we're expected to put what we've been blessed with to good use: our talents, our time, our energy, our wealth and resources.
We have a moral duty to help others. This responsibility starts within the walls of our own home. From there, with our footing stable, we should reach out, helping our community, our city, our state, our nation, and even, if we're fortunate enough to be able to, the whole world.
This is a duty that cannot be forced. The goodness inherent in it comes from our willing choice to personally sacrifice. Our focus should not be on whether or not others are fulfilling this moral duty. Our focus should be on whether or not we ourselves are.