Why do people assume all parents are extroverted and social?

Anyone with some sort of intelligence would understand that a parent is still an individual with their own personality, characteristics etc aside from being a parent. Meaning you can be a parent and still be an introvert and/or hate socializing being around others. When I'm alone nobody bothers me. When I'm with my kid people expect me to acknowledge them and engage with them. I hate people.

Why do people assume all parents are extroverted and social?
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