Why is this so important to you? We disagree.
Hitler disagreed with you concerning the humanity of the Jews. Was his opinion also valid like you think yours is?
There is only one point at which life can begin. If we can't agree on it, so be it, but obviously one of us is right, and the other wrong.
I'd like to know what basis you have for your beliefs. You must have some point when you think "life" begins, and you must have some reason for thinking that, right?
SD