If we followed the logic of what you are saying, then Christ died on the cross for nothing since he cast himself before we "human dogs and swine".
Paul should not have subjected himself to beatings and arrests for preaching the gospel since all he was doing was castings himself before "dogs and swine"
I don't think you understand quite what that verse was saying!
The man who would excuse himself from this battle under the belief that this is what is expected when one witnesses to the "wrong" people is a lazy and foolish patriot.