The stupid part is that we're not using nuclear energy, and have irrational fear of nuclear waste relative to much more dangerous, potent, and undiscussed "conventional" industrial waste.

Also naturally ocurring nuclear reactors are a thing. On the surface, too, I'm not talking about the Earth's core here.

> gross water mismanagement

Animals do intentional and unintentional water management too.

> fossil fuel mining and usage, all things plastic

Fair enough, this is unique-ish and we are mishandling it, though the use of either isn't bad per se - rather the unsustainable use.

> hunting and killing for sport and other non-nutrient-related desires

Have you ever seen a cat?

> extreme resource hoarding

That's a fundamental thing all life does.

Keep in mind that nothing in nature is thinking forwards - all life is self-destructively greedy, and nature doesn't care if e.g. some beavers dam a river and accidentally flood a whole valley, killing themselves, their offspring, and extincting a bunch of unique flora and fauna. The stability you see, that people so love and associate with nature - it's not a fixed thing, it's a temporary equilibrium in life killing other life.