Some of the harm that humans cause to other humans and to animals is mediated by the destructive effect that humans have on the environment. For much… - David Benatar

Consider another analogy. If you are worried about your father’s health, it does not make you less worried about his health if you are told that your mother is entirely healthy. It is obviously good that your mother is healthy. If she were not, you would worry about that too. However, being told that you need not worry about her health does not diminish your worry about his. Similarly, while things would be much worse if our lives lacked any meaning, those who are concerned about the absence of cosmic meaning are not consoled about that by the observation that at least some kinds of terrestrial meaning are attainable. The point can be expressed another way. I may derive some meaning from helping another person, and that person may derive some meaning from helping a third person, but that provides no point to our collective existence. We can still say that human life in general is meaningless sub specie aeternitatis. There would be something circular about arguing that the purpose of humanity’s existence is that individual humans should help one another. Moreover, even if an individual human’s life has some terrestrial meaning (perhaps by helping others), it does not follow that that individual’s life also has cosmic significance.

Humans may exceed other animals in their sapient capacities, but we also surpass other species on our destructiveness. Many animals cause harm, but we are the most lethal species ever to have inhabited our planet. It is revealing that we do not refer to this superlative property in identifying ourselves. There is ample evidence that we are Homo pernicious – the dangerous, destructive human.

In coming into existence, we are guaranteed to suffer harms. The nature and magnitude of those harms vary from person to person. However, it is more common than not for these harms to include formidable ones: grinding poverty (and its associated costs), chronic pain, disability, disease, trauma, shame, loneliness, unhappiness, frailty, and decrepitude. Sometimes, these mark an entire life. Other times, they begin to intrude into a life that was previously devoid of them. For example, no matter how youthfully robust one may be now, a time will come when one will become enfeebled, unless something else gets one first. Although there are some things we can do to prevent or delay some of these harms, our fate, to a considerable extent, is out of our control. We may attempt to preserve our health, but all we can do thereby is reduce, not eliminate, the risks. Therefore, we have some, but relatively little, control over whether these harms will befall us.