Life doesn't start; ergo, no life; ergo, nothing to end.
That is precisely the fallacy I'm exposing here. Let me ask you, on the electromagnetic spectrum, where does "red" begin? It doesn't, because red falls along a continuum of electromagnetic wavelengths. Does that mean that there is no red? Of course not.
You (and the many others who fall for this fallacy) have not incorporated into your thinking the concept of continua.
Continua are everywhere in our everyday experience, especially in physics and biology. And yet, this fact is denied by statements such as yours.
So, individual human life does exist, but it does not start. That is the nature of the space-time continuum.