What are parasites good for?
It's true that parasites are generally bad, whether in humans or animals. But what are parasites good for the world? Who or what benefits from parasites? Annoying mosquitoes, etc., at least serve as food for other animals, but what would be an argument in the case of parasites?
Feed.
And asking for the purpose is relatively useless. Soblad there is a niche to occupy, this is also occupied. No matter if someone else uses it or not. Life in itself is a pretty stubborn bastard – if there is a chance, someone comes and uses them.
Mushrooms are also a form of parasites. Often these enter a symbiosis. So parasites are not always “bad”.
I also believe that nature has thought something about many things.
Let’s do this.
https://www.ingenieur.de/technik/fachbereich/produktion/ Pilze-helfen-baeumen-stress-an-schwierigen-locationen/
It doesn’t have to be good. Life does what it wants
primarily the parasite
and then the animals eating parasites
dead parasites become nutrient-rich biomass and the end of all
Cranches and weak animals die by parasites. Ecological balance and selection.