People that have babies from sperm donor is it really their real children?

I see a lot of couple claiming kids from sperm donor is their own real kids, I call that utterly bullshit, the baby didn't come out of you so therefor it isn't your real children

But there are some that dont claim that and know it isn't their real biological children

but why do a lot of couple that have kids from sperm donor think its their real own kids?

People that have babies from sperm donor is it really their real children?
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