we have improved habitat so almost every species thrives.the deer and turkey population recovery are miracles in consevation.our man-madelakes are full of sportfish.we even have man-made hybrids from our angling pursiut.
we(man) have irreversibly altered nature. its now imbalanced and needs maintinance to stay serving our needs best. this has a pretty, happy side and a ugly side.
almost everyone would find watching twins fawns play in the sun pleseant but half the people in this country would have something negative to say about a stack of coyotes taken so those fawns have a higher chance of surving.
now i know its a jump from coyotes to carp. the principle is very similar. it is not pretty,it is not for everyone,but they need controlling just the same.