Most people are programmed, virtually from birth, with a single model of reality, probably whatever model your parents subscribed to.
It’s a trap.
Question everything, actively seek out more models, try to rank them by probability, and always remain open to new possibilities.
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Friendly atheist here: eh, this is a bad assumption. Not everyone's parents do this to them!
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Name, nationality, race...are all equally fictional. They are stories you assign imaginary importance to; only they seem real because everyone else around you does too.
The culture you grow up in—not only your parents—does this to you, without your consent nor awareness of it.