I assume you are an only child?

Your father's aggressive attitude would have done some damage created insecuritys. Maybe staying childlike is protection against having to having to deal with adult males.

Being an only children can bring it's difficulies. There isn't the normal rough and tumble that occurs with siblings. The play, arguments, petty fights and comradary.
It's harder to be confident and make friends it's like you don't know the rules. (At least that's how I felt)

Sounds like mother was caring maybe she was reliant on you for company?

Sent from my SM-N910F using Tapatalk