It is impossible to avoid destroying things and people, even if you choose to behave only in a constructive way.
For example if you are going to plant a tree, in order to do that you have to first dig a hole in the ground, through this act you are going to destroy all the already existing life forms that are established there.
Conceptually all constructive actions are acts of reconstruction. Which means that in order to construct something new you first have to destroy the old.
Not only externally but also internally, digging that hole in the ground is going to put some strain on your body and cause some damage to you.
It is impossible to destroy something external without destroying yourself, some things will do more mental damage to you then physical, like the soldiers that come back from war physical fine but suffer from sevear PTSD, and at the same time it is impossible to not destroy anithing at all.
This aspect of natural law when misunderstood can create an existential crisis. How is it possible to be a decent human being when it is impossible to avoid damaging others and the environment around you!?
So why not just fall into the nihilistic wiew of the world, of dog eats dog.
Like most things that are impossible to avoid it doesn't mean that you can't minimize the damage of those on your life.
The purpose of conservation is not to achieve immortality or keep things going indefinitely, but to maintain the quality of life. You see no matter what you do or don't do you are still going to die, but are you going to live a quality life, is your life going to be worth living?
The way to minimize the amount of destruction you do on yourself is by choosing to cause external destruction only with the intention to build or protect not violate.
