Same rational used to wipe out the Native Americans, just substitute SAVAGES for wolves. Ignorance and fear are the driving force of many peoples rhetoric AND actions.
I didn't say that was my opinion.
I'd recommend reading a history book about the Indian conflicts that hasn't been written in the last few decades.
That doesn't mean settlers were always right. It also doesn't mean settlers were wrong to traverse land nobody claimed to own (Indians didn't believe in owning land), or defend land they had purchased from people intent on killing them for invading land they still perceived as theirs - or nobody's.