Trees don’t exist “for” us. Animals don’t exist “for” us. We are a cosmic accident.
The second point being made has no relevance to the first point.
The fact that they make our lives easier in a great variety of ways is incidental.
It's really not.
Trees, like all plants, exist as a similar cosmic accident and their “purpose” is to continue their spread and growth.
Incorrect, their purpose is to serve whatever needs we might have for them. That's the sole reason they exist.
I’m not going to stop using wood any time soon, but the way you’re trying to paint humans as like, the one true species or some shit, is fucking gross
That's evolution. That's how we evolved, and that's how we live, and that's why we are not anthropomorphic cats or octopi.
We allow these things to continue to exist because they are not harmful to us, and that they are useful to us. If they were not useful, they would cease to exist, and would've ceased to exist long before your suicidal morality came about. Until otherwise proven, the default is that things exist to serve us, the only part of the universe that can explore and understand itself. Anything less is suicide, anything more is ascribing natural evolution to God or the great spirit or or the oneness of everything other such childhood nonsense.
We are the singular apex predator. There is no living thing in the known universe that has our kill count. We allow whatever to exist, not the other way around, and we evolved to that place in the chain.