or you part your legs in the dark to receive an individuals viable dna wrapped in his motile sperm cells only to discover by daylight that your vagina now holds the sum-total of all that remains of that mans living dna , and it now slowly dying cell by cell in those dark recesses , no chance for replacement or renewal and no egg fertilized ( would that you could at that moment and in that knowledge unfetter that cloistered egg and make it available to one of those lingering sperm cells , and thereby perpetuate some part of that mans now extinguished life ? ) .