re: Kids Calling Parents Sir and Ma'am

You are teaching them to respect authority. You know what your kids need better than anyone else. Your kids will be similar to you in many ways and different in their own unique ways. You know what you needed as a child. They will need similar instructions you needed. Sometimes we did not receive what we needed as a child, and we know it.

Our society has children being raised that do not respect authority or have good manners.
Remember, you are forming habits within your children. Whatever you teach them will form a habit. Whatever you do not teach them will form a different habit.
If you teach them to pick up their toys after playing with them, they will form that habit. If you DO NOT teach them to pick up their toys after they play with them, you are forming a different habit.
You have to decide what habit they need, then help them form the habit through repetition.
If they say, "Yes, sir or yes, daddy to you that is fine. If they say, yes, no, or ok to you and it is permitted they are developing a disrespectful habit.
It is very difficult for a person to love one they do not respect. Yes, sir is an act of respect. Continue to tech them how to respect you and others so their love within themselves can grow.