I find it interesting that people place such significance on a new life starting because something has been created that is genetically unique?

So what? To be concerned about that just seems anal to me. So what something unique was destroyed when something else unique can be created in no time?

Ok, so BTirish says it is a fact that life is created at the moment of conception. We can't argue with that because his definition of life is the same as his justification of when life begins.

So it would be more useful to coin a term that describes "meaningful life" in discussions like this.

Having said that, I dont think the OP's intention was to ask a question about facts, it was to ask what Christians believe, not what is a rational opinion on the subject, so I will leave you to it.