The Christian belief is that humanity is hopelessly broken, and as a result so is this world. That will not change in this age. Only in Christ do we have any hope. Because Christians have Christ, we are to do good works and fight against evil. This means we don't sit on our hands and not feed the poor. We feed them, but we also recognize that famine cannot and will not be eliminated. Or take another example: There are still 27 million slaves in the world, IIRC. We can fight a problem, but only God can truly and utterly defeat it. Is it good that slavery has been reduced and universally condemned in the West? Were Christians right to fight against it and to continue to do so? Yes, but the problem still exists and only God can fully stamp it out. I wouldn't call that laziness. I call it working with reality, and nobly so.
Are you now? The epitome of secular humanism is reaching utopia. Maybe you're just not deep into it. I don't mean any disrespect by saying that.