This does not make sense. There are other professions who come into contact with strange dogs on a daily basis (postal workers, Ups, delivery men, landscapers,

This does not make sense. There are other professions who come into contact with strange dogs on a daily basis (postal workers, Ups, delivery men, landscapers, utilities inspectors). How many get bitten or face aggression? They would face this issue on a much larger scale but it not so.