Dogs are lovely creatures. They are loyal, obedient, and they are full of unselfish love towards their owners.
I don't know how a creature that magnificient would be feared by anyone.
Yes there are breeds that can be more demanding. But if you are active and spend time with your dog, they will learn learn your habits and you in turn will learn how to care for them and be their friend.
Never spoil a dog with too many meaningless treats though. Your dog won't understand what you want from them and they can learn to boss you around if you are too nice.
Always remember dog gets most of joy when it can be of use, when it can be a part of the pack (that is the family), and it has its own chores in the pack. That makes the dog happy. And they are very eager to please you when they know what you want.
I have met different dogs, some are friendly while some are frightened.
I remember getting almost bitten by a dog one day
I hope you don't mind, I made a reply to you via a new post.