[Opinions] Absolutely!
in reply to a message by Spree
Everyone in my family goes by a nn even my mother and father. I feel that when it comes to family and good friends your fn is your "proper name" and just too formal. A nn is an expression of love and affection in my family, like a "pet name". I do the same thing when I make new friends. In the beginning of the friendship I call them by their fn and once I'm comfortable I give them a nn. It's my way of saying your like family to me. So, when I pick a name I automatically think of what the nn would be because in my family that's what they would go by for the rest of their life....unless their in trouble then it's your fn, mn, and ln! Uh-Oh.