Well, you say life occurs at conception. I'm arguing it occurs when the fetus becomes viable without the use of the mother-host (or even available medical technology). There is a standard here which you are simply assuming exists. I pose to you that it doesn't.

Now, you are free to have your opinion as to what the truth is here but at least acknowledge that your opinion is an opinion. Facts are things which are inherently self-evident and not open to explanation. There are some questions which have no factual answers possible. I belive this is one of them.

As soon as you recognize the ambiguity, you can understand the standpoint of the other side of the debate (although, I tend to find myself in the middle or even out in a distant third-place minority view rather than on 'either side').

Someone else can speak on this, but in my researching the D&E procedure (the procedure done to end the most advanced sorts of pregancies) I came accross information that seems to indicate that it is not available after the 24th week. It would appear that medicine in general recognizes the 24th week as the point that a fetus has at least a 40% chance of survival, and thus, a fair point to say that a fetus has a good chance of being viable. It's assuming a lot, but it appears that they follow the same logic that I do.