You should consider Chesterton's fence before either destroying something, or allowing it to be destroyed. Chesterton's fence is the idea that you should under

You should consider Chesterton's fence before either destroying something, or allowing it to be destroyed. Chesterton's fence is the idea that you should understand a thing thoroughly, including its present function and what might change if it disappeared, before removing it. The hypothetical example being a fence in the middle of nowhere - seemingly useless, but you should really make sure before pulling it up as it may be serving a vital function to somebody else (or the system at large). The point being, we're stumbling into an scenario where we've killed off the majority of animals in a major ecological category, which is likely to destabilise the environment in both known and unknown ways. If we value the environment's self-sustaining capabilities, this should be greatly concerning.