You assume that if no one else owns you, then you must own yourself. Not so. No one owns you. You are not property and you cannot do whatever you want with yourself.
Now, you are just contradicting yourself. Or, you just aren't smart enough to see it? I assume you are alluding to God owning me? Which God? Odin? Jehova? Buddha? Who says that particular God owns me? Your priests? Mine?
Better still, aren't those claims of ownership between me and whatever God/s I adhere to and not up to any State entity? If a State acts in a Gods name and claims ownership of me, how is that different from the socialists "God" that is the State itself?
This is fun beating you up with your own lack of anything remotely close to logic. You make it almost too easy.
Maybe you are right, from a moral point of view. Maybe God has a higher "ownership" right in my person than I do.
However, I have a higher "ownership" right in my person than does any other human being. So, no other human being has the right to tell me what to do with my person unless my actions impact the liberty of another person.