No where in my post was there indication or any reason to make the claim that I don't understand what you're saying. I get what you're saying, it's just unsupported and presumptuous -- which is exactly what I said in my first post.
Even if we knew that in every single case that your life was completely ruined after the fact for various reasons (which is factually not the case), it's still morally reprehensible that you consider the outcomes marginally different to the point where whether or not we allowed you to live is insignificant.
I don't consider this argument weak at all. There is no reason for it to be weak; in fact the only way it can be weak is if you make certain assumptions (that we know aren't true) along with some other not-so-popular philosophical value judgements. Hence, not only is the position rather disgusting at a certain level, but making a claim that the argument in discussion is weak is actually rather weakly supported in and of itself.
Again, it is you who does not really understand the position you are taking. I'm not sure how much more you want me to spell it out.