Why did black slave women in the Americas keep their rape babies?

When black slave women were raped by their slave masters in the Americas, why on earth did they keep the abominations?

Why did they allow themselves to be replaced by crossbreeds? The average black American is 25% European and more depending on the state with 75% being paternal dna entirely , with black people from Louisiana having the most, don't get me started on the blacks in South America.

Black women aren't biologically attracted to European stock, so were they forced to birth them? Could they not abort the pregnancy in the early stages with concoctions or force a miscarriage?

I'm curious.

Why did black slave women in the Americas keep their rape babies?
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