Mike, all what you say about human nature is really cute and all that but the opinion of a person that will never be in that situation will never be relevent to me. Im not saying men shouldnt have their word regarding that issue, but a word that is not supportive in favor of a decision made about a situation that is imposed on a person (male OR female) and that is likely to fuck up their life or even other's is just absolutely out of place IMO. You will never know what it is to be pregnant, no matter if you have kids or not, you will never know how it feels to carry a baby inside of your body, you will never know how it is to be raped, you will certainly never know how it feels to raise a child that you didnt wish and that has the face of your rapist.
That said this is an image of what you are arguing for :
Now, as a WOMAN I will say this simple thing. Do I want to fuck up my life because of this little thing above because a man couldnt control his fucking DICK and decided to take advantage of the fact that I was a 'weaker human being' and therefore a vulnerable one? NO THANK YOU. Now, if I would ve really go trough a rape and got pregnant with it, do you really think that Im going to want to 'expand human race' after another human has done that to me? If your answer to this is yes, you are just plain stupid.
(Allow me to be rude here, because as a woman if you would respond otherwise, I would not only think you are stupid but I would think of this as the worse insult a man could ever do to me)