Are you the expert on what species actually serve a purpose?
Many years ago, we would dynamite whole trees full of roosting crows - we thought they were destroying the crops.
Then, someone had the bright idea to investigate the contents of their digestive tracts.
They found the crows stomachs to be full of the remains of insects that were actually *damaging* to crops.
You seem to think like Bill Gates, who apparently believes that ‘dimming the Sun’ will somehow HELP Earth.
I guess you both got your scientific degrees from the same institution.
Not an expert but I do deal in reality and if you follow the history of humans it all get’s laid out and easy to see. Unless it feeds us or warms us it’s pretty much useless to our existence. In many cases it can actually compete against us such as some of our larger predators. Early humans killed every one of them they could.
We no longer need birds to protect crops from insects, we can do that.
We no longer need predators to control many of our critters such as elk, moose or deer, we can do that.
As I said before, some species exit only because we allow it. No species can stand up to the onslaught of the human species. There’s a reason some are protected and other have certain seasons and bag limits. I’m on a 42 square mile ranch every day, over a years time I’ll kill a couple of hundred Ravens a year. They will wipe out a doves nest, kill baby quail and kill baby cottontails. All are considered a food source for humans. They have also been know to kill lambs and blind calves. North of town some of the farmers have annual Crow shoot’s when their migrating. A little beer, BBQ and spend the day wearing out the shotguns.