Why don’t some people understand the privacy of childbirth?

I’m 7 months pregnant and my best friend keeps saying that she wants to be in the room during labour, or at least be in the waiting room and then meet the baby as soon as it’s born.. I keep telling her no, I don’t want many people there, I won’t have many of my family there, let alone any friends. It’s a very private moment, and the only people who will be involved will be people who are absolutely necessary. My best friend gets upset everytime I say this. Why can’t she understand? She’s a trans woman so I know that she doesn’t fully understand childbirth and how intimate it is etc, since it’s not something she’ll ever go through.
Why don’t some people understand the privacy of childbirth?
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