As opposed to elephants or sea urchins? How can humans not be the cause humanity's biggest problems?
The Buddha taught there are three kinds of dukkha [usually translated as “suffering”]. The first kind is physical and mental pain from the inevitable stresses of life like old age, sickness, and death. The second is the distress we feel as a result of impermanence and change, such as the pain of failing to get what we want and of losing what we hold dear. The third kind of dukkha is a kind of existential suffering, the angst of being human, of living a conditioned existence and being subject to rebirth.
https://tricycle.org/beginners/buddhism/what-did-the-buddha-...