Maybe the people who are allergic to your dog that are just trying to get to work and don't want to have to deal with hive/sneezing/itchy eyes etc... Maybe the person who has been attacked by dogs. Maybe the person trying to bring their cat to the vet that might get attacked by your dog. Just because you think your dog is well behaved doesn't mean it isn't a nuisance to the people around them. You don't know everyone's lives. They aren't allowed, and it's selfish and inconsiderate to not care.