Killing all the predators is not a good idea
I agree 100 %. Killing all of them will have huge consequences for the local ecosystem!
we can't compromise on human life
But we also need to differentiate between how humans feel about being scared of predators, versus how dangerous they actually are. Here in Norway most of our wild wolves are shot, and when conservationists oppose this, the people who wants to hunt the wolves tell that they are scared of being attacked by the wolves. Yet no one has been killed by a wolf in Scandinavia in well over 200 years, and that attack was when done by a wolf that was injured by hunters. So they have no reason to be afraid of the wolf, but they still are because they feel like it is scary.
There was a time in old days when predators & humans were familiar with each other, At that time they understand each other behavior. They don't feel insecure each other company. Today world has been changed. World is more developed at the cost of demolishing forest, killing naturalul resources, covering land for plaza, metro city, away from natural life. These things made a huge gap b/w humans and predators. so that's why we rarely face predators in our surroundings as a result human fear has been increased and same apply to predators. There are few other factors which are hidden like, in our region mom control kids by make them afraid of dogs,cats and so on. This fear set in the mind of kids when they grow up. They behave accordingly.in my opinion fear is not the only reason to kill the predators. in hindrance of fear human do hypocracy. majority of people kill predators brutally for their own enjoyment & satisifaction. It's a bad thing indeed. It should be restricted