To begin with, your claim that you know that you have not impregnated any women is based upon a false premis. It assumes that you have not impregnated a girlfirend because none have told you but an assumption is not a valid basis for a claim. The claim is in and of itself is a post hoc fallacy. You have had protected sex. none of your girlfriends have told you that they have become pregnant. Therefore, you have never gotten one of your girlfriends pregnant. The claim also falls under the heading of a relativist fallacy in that it is true that other men have gotten women pregnant and been unaware of the fact, but you claim, with no rational basis with which to support the claim, that it is not true for you.
The very claim of an ad hominem attack is no more than a red herring that serves the purpose of diverting a discussion that you were losing.
I could argue that assumption as effectively (and as fallaciously) as you if I said that because you have had protected sex, and protection fails and none of your girlfriends has told you that you have gotten them pregnant, therefore you must be sterile. Of course, that would be a post hoc fallacy because I would have been stating it as a matter of fact in the same way you made your statement.
Of course, I never claimed that you had gotten a girlfriend pregnant which would not be a statement of fact. I stated that you could not know for sure that you have never gotten a girlfriend pregnant unless you have never had sex which is a fact.
The reasons they might not have told you could range from simply not wanting children to viewing you as unworthy as a lifetime mate or father to their children. Expressing possible reasons why someone may have taken a certain action doesn't constitute an attack on anyone.
Face it robeth, you are outclassed here. You have brought a knife to an intellectual gunfight. You had to be dishonest to even set up your claim for an ad homenim attack on my part. The format that you laid out is not the order in which the discussion took place. There could be a multitude of reasons why a woman might not tell you that she is pregnant and that she might view you as unworthy is only one. The fact remains that you can not know that you have never gotten a woman pregnant unless you have never had sex. Unless, of course, you have her held prisoner somewhere so that she would not be able to abort the child without your knowledge, or you are congenitally sterile.
And my statement that birth control fails has nothing to do with anything except the FACT that it does fail and that hundreds of thousands of children per year are killed precicely because "safe" birth control methods have failed.
No claim that I have made has anything to do with you, my claims are simply statements of fact. The only way that you can know that you have not gotten a woman pregnant is if you have not had sex with her, unless, of course, you have her held prisioner, or are sterile.
So I am still waiting for you to bring forward any evidence of an ad homenim attack upon you by me. I do not engage in attacks in lieu of argument and you will find any logical fallacy on my part very rare indeed if you set out to prove one.