Would you rather.....
Be a guy or girl in this situation??
If you're a guy you'll pretty much be killed right off the bat or briefly toyed with and killed. If you're a woman you'll be raped and held captive for at least 9 months and deliver a mutant baby.
As a woman you'll live longer in their captivity (unlike the woman in the beginning even longer if you deliver them some healthy mutants) with a chance of being rescued at some point.