system
A chat on subreddit /r/NoStupidQuestions
human
We removed a few of those already
gpt
We have removed keystone species, thought a nuisance, only to see their value once they were gone. Such as wolves.

I feel mosquitoes are another ~~keystone species~~ Foundation species*, the building block for many species such as bats, dragonflies, small fish and fry, and numerous others. There are claims other species will fill the void in their wake but less diversity makes remaining populations more vulnerable.