Yes it Is an opinion. Some people might think aphids are pests
They kill aphids and other garden pests.
No, aphids are insect pests which suck the juices out of plants
pests such as locust, caterpillars, and even aphids.
Army Worms, Wheat Aphids, and Cereal Bugs.
Ladybird
Aphids and ladybugs are examples of how insects can control other pests. Aphids gather ant populations to select sites in gardens and yards by secreting honeydew in exchange for bodyguardiandship. Ladybugs prey upon such garden and lawn pests as aphids, mealybugs and scale.
Yes, they do. They eat dried and fresh ( low acidic) fruits, aphids and small insects and pests.
Ladybugs eat aphids and other pests that can harm and kill plants.
Ladybugs primarily feed on aphids, scale insects, and other soft-bodied pests, making them beneficial for controlling garden pests. They do not eat corn or any other plants directly. However, they may be found in cornfields if aphids or other pests are present. Their presence can help protect the corn plants from these harmful insects.
By eating insects of which some are pests. Ladybirds are specialists though as their prey is aphids.
In leaves of trees or plants they eat pests that can eat leaves like aphids !
R. L. Blackman has written: 'Aphids on the world's crops' -- subject- s -: Aphidadae, Aphididae, Aphidodae, Diseases and pests, Field crops, Host plants 'Aphids on the world's trees' -- subject- s -: Aphididae, Diseases and pests, Host plants, Trees