I've yet to meet another person who is intentionally ambivalent on the issue, so I can't exactly do that. I'm neither pro-choice nor pro-life. I've chosen to remain neutral on the issue and allow others to make the decision since both sides of the debate seem wrong to me and I can deal with either outcome.
But I can see both sides of this argument and both sides feel irrefutable to me. That's not to say that the religious origins of many pro-life viewpoints aren't irrational or that it isn't hypocritical to oppose abortion and support war, the death penalty or any of the other anti-life policies often advocated by pro-life supporters. But just because someone arrived at a correct conclusion by specious reasoning or impure motives doesn't make that conclusion wrong.
I recognize that many people aren't as conflicted as I am on this issue. I'm happy for them. But to suggest that this issue is one where science and logic makes one position definitively correct and the other incorrect is wrong. It is an issue of morality and philosophical beliefs and, as such, science cannot decide it any more so than religion can.