Earlier quoted context omitted.
Sure, and also I am bigger and stronger than you. Therefore I take your physical object and you can't stop me. That's natural in the sense that it follows from natural law (physics). Natural laws are brutish and don't support the kind of society that most of us want to live in.
I'm not entirely sure what point you're making. That's not physical law in the same sense – nothing compels you to take something from me (or prevents you from taking something from me if you're sneaky or strong enough, as you said). On the other hand, you and I can't both have the same object even if we wanted; it has nothing to do with ability or circumstance. edit: I should clarify that you and I can share somethi…
What if you’ve hoarded all the food or all the water, and I need it to survive? Would that be compelling?
I’m with the other guy. These distinctions are arbitrary. They may be useful for a society that attempts to maximize “happiness@ (also arbitrary), but it remains that they are not universally obvious.