Nihilism, as wiki states it. Basically, the general meaning of the term says that nihilists 'generally assert some or all of the following: there is no reasonable proof of the existence of a higher ruler or creator, a "true morality" is unknown, and secular ethics are impossible; therefore, life has no truth, and no action is known to be preferable to any other'. Nihilism also argues that 'The world, especially past and current human existence, is without objective meaning, purpose, comprehensible truth, or essential value.' Quite an interesting thought and subject to dwell upon, but does pose some pondering over.
The orginal questions on is human life of any worth and is the sense of human worth tied towards theological belief, or can it be held independently of ideology? I think it depends on people's individual opinions and beliefs, theologically or ideologically. For me, I believe that human life is of worth, just like that of any other organism on the planet, and that if we really were that worthless, then why are we even here? Others might say the same, or say differently, it's all down to what the individual mind considers and thinks. Life is what we make of it.