Going out on a limb here, but I assume you don't own one of these life-saving, drug-sniffing dogs you mention. Nor do you have a guide dog. I assume you have or had dogs primarily for company (very selfish) or for protection of property or self (incredibly selfish and destructive). The dog owners and their dogs don't exist in a vacuum. There's always a cost associated and it seems to never be paid by them, but more likely by the people around them.