...and all cells contain and are controlled by DNA, and DNA has been continuously alive for billions of years, so all living things began life way back then. When does life begin for a human? We can impose almost any limit we desire. We make decisions all the time about when to end it. 'Abortion' is just another decision. Who has the right to make this for a woman other than the woman?
Human beings didn't exist billions of years ago, don't try to implement your talmudic logic here.
Life begins for a human at conception, when it is a unique biological entity with 46 chromosomes
If we can impose any limit, than I impose it at conception, when the human life starts. A woman does not have the right to murder another human being in her womb.
Right, you impose your definition. Impose it, then, on yourself and leave freedom to others.
'Talmudic' has nothing to do with it outside your imposition.
What right does government have to execute anyone? What gives you the right to pay taxes to have people killed at your behest all around the world?
Impose anything and everything you want or can. Others are not obliged to accept your ideas. This issue has been decided by society and the law. Fortunately, it is not up to you to change it.