> There are clearly some system of rights that are better than others, for humans.
I certainly agree with you : but "better for humans" is a morally grounded position.
> BTW, we kill wolves that attack us.
Sure. How is that a problem?
Yet there is. People can temporarily override human nature, but it always reasserts itself. Universal rights are based on human nature.
You can socially declare that what's yours is mine, but be both know how that will end up.
You can also pay people to be poor, but then you'll wonder why poverty increases.
