You tend to personify larger complex systems…
They are no “agents”, not rly more of agents than we all are.
It may not be necessarily a deliberate action to test, evaluate and strengthen. It’s more so one of the ways the nature evolves, and this is done automatically, by nature. We do not evolve because we decided to. We evolve because it’s in the intrinsic nature of us, of the all.
And also, lots of things like that may ultimately just come down to accepting that at the most fundamental level, things just are. They are not here bcs …, they just are.