Why care about nature?
Suppose you are living in a base on the moon. You appreciate oxygen, water and food directly relate to your survival on the moon. If toxic fuel polluted oxygen, water and food you would worry about surviving on the moon, including if any of these resources ran out.
The basic building blocks of life on earth are air, water and soil. Like my moon example the air, water and soil on earth are the life support systems of human survival, pollute or lose these resources, you die.
Even if you are low IQ by doing without water after a few days, or holding your breath a few minutes, you recognise you need air and water to survive. How long can you last with no food? Soil is the main foundation of food production. Soil is like a battery, you know that your torch eventually sucks the energy out of your battery, and soil has a similar finite stored potential energy that needs recharging like any battery. No vitality in the soil means no food, you starve, you die.
Water, air and soil are energy systems. Prosperity, defined as health, happiness and abundance, builds upon the foundation of water, air and soil. At any moment you can call upon a finite amount of water, air and soil, once this is gone in your location you will suffer sickness then die. You appreciate that this finite resource of water, air and soil needs replacing, which requires unhindered flow of replacement water as rain, air from winds, and soil from animal waste or plant decomposition. You also appreciate water, air and soil need renewal: thus water evaporates and precipitates; trees recycle oxygen; earthworms, bacteria and fungi breakdown waste into basic nutrients in the soil for plants to reuse.
Here is a water aquifer, no water, no life. If you drain all the water from the water aquifer, no water, no life. If you pollute the water aquifer, sick water, no life. If you stop the flow of water to the water aquifer, via dam, blocking stream or river, obstruction with concrete, no water, no life. If you destroy trees, plant concrete that causes massive evaporation, you disrupt renewing rains to the water aquifer, no water, no life.
Stupid humanity, blinded by hubris, ignorance and control, determined to suck dry its water aquifers, pollute its water aquifers, disrupt motion of water to its water aquifers and undermine the renewal process of water aquifers. No water, no food, can humanity drink or eat oil, arsenic or dust to survive?
The lowly ant and the lonely willow tree appear useless to any onlooker, but the ant and willow tree are part of the renewal process of air, water and soil. Destroy the ant and willow tree: you thirst, starve and suffocate; they are part of the web of life; they renew water, air and soil. Why should you care about nature, the ant and willow tree? Because you die if you misuse and abuse anything that contributes to the renewal process of air, water and soil.