That was what my rabbi said during one Talmud study class. He's a realist and knows that even in the past, the majority of the people were not 'pure as the driven snow'. Instead, the plow had already been through.
Well I agree with your Rabbi and the last time I saw anything that was pure as snow was the "snow" which I don't see very often living in So Calif.
But I get his meaning....
One day all our answers will be revealed, but in the meantime we can agree to dis-agree at times, anyways what fun would it be if the whole world thought like you or me?
Not to mention a few millenia of involuntary "ravishings".