In fact, it's the norm in every setting except the abortion debate.Oh I understand it looking at it from this side. Obviously you give your age from your date of birth, but that is just the norm in most social settings.
Look at even the Catholic Church... have you ever heard of anyone seriously trying to devise some method (maybe with some sort of long plastic syringe filled with water) to baptize fetuses in the womb? Of course not. When it comes to the problem of Original Sin, the Church is apparently content to leave that "child's" soul in peril for the nine months of that child's life when he or she is probably at most danger of dying... and therefore of being at risk of being consigned to Hell for dying unbaptized. It's apparently only on the abortion issue where the Church apparently cares enough to do anything for the welfare of the "child" in the womb.
So... because the actual start of life is hard to pin down precisely, rather than just make a best guess at when conception occurred, we base everything off a measure that's wildly wrong, but relies on a fixed, determinate point?Imagine we started counting from conception, in our society. Then we would give our age dependent on when we were conceived rather than born. I appreciate that in modern society it can be hard to tell when a child is conceived...Something I dislike intensely, but what can I do.
Why?Back on the point, I suppose it all depends on your definition of life. If living is physically 'being', then I guess it starts at conception from my point of view.
I somewhat understand the standard theist position: a soul is what makes something a person, and conception is the moment in time that God sticks the soul in.
... but what's the rationale for an atheist to claim that life begins at conception?
And wasn't the embryo "being" as a separate egg and sperm before fertilization?