If I am an avid duck hunter I am not going to get an English Bulldog or an English Mastiff and teach it to retrieve the ducks I shoot with my shotgun. 

Quite right EGP. We must select the breed based on the function they are to perform. Your example above is a good way to put things into perspective.  Much the same as you would not want that English Mastiff if all you want is a lapdog.