I haven't argued any such thing. Read more carefully. Your position is that there is no difference between a fetus and an adult. They both consist of a mass of cells with the same DNA. That is also my position.
The existence of a soul in either of them is an orthogonal issue which has nothing to do with whether the state should protect a mass of cells of any size.
If you can kill one for your convenience you should logically be able to kill the other.
So, if I can rationalize that you represent a threat to my body to any degree at all, I can snuff you out like the mere sack of cells you claim to be. My domain does not end at my skin - you are in the environment I need to sustain life. So I'm morally and ethically fully within my rights to eliminate you - even as a precaution against how you might inadvertently inconvenience me in the future.
My position is that you can't have a say over someone else's body unless that body lives inside of you.
In our case the life living inside another one can kill its host at any time. It threatens its existence.
Pretty straight forward mate.
So to summarise
1-Your body, your business, your property.
2- You can kill anything, anytime, if that thing lives inside of you and threatens your own life.
Sorry but you can't twist the religious component any way you like. In your cult you can practise anything you want. let others be.