As for your first paragraph, of course. I was just pointing out how things are with states, but you're right that for property it extends to individuals. As for your second, communism begs to differ, but it hasn't done so admirably in the world...
It would be nice if a society could exist that wasn't reliant on violence and also not suck, but I'm not sure if it's really possible.
Oh and "this is mine" has meaning in the context of a relationship where one party will simply be upset if the object is taken and the other party cares enough about them not to take it for that reason, even though there is no threat of violence if they do. This is how many couples and families work.
http://dbzer0.com/blog/private-property-vs-possession
It would be nice if a society could exist that wasn't reliant on violence and also not suck, but I'm not sure if it's really possible.
Oh and "this is mine" has meaning in the context of a relationship where one party will simply be upset if the object is taken and the other party cares enough about them not to take it for that reason, even though there is no threat of violence if they do. This is how many couples and families work.