Maybe I don't believe in private land ownership. You can't force me to acknowledge it, everything had to be voluntary.
This just goes back again to it being your choice to ignore others property, and their choice to defend it, with force if they must. Something that already exists in current system of government. Not sure why you would even consider this...
If you use a little introspection for a moment, you'd realize that all 'owned' things are privately held. There really is no public and private, that would be IMO, misdirection. The 'real' question is how you arrived at ownership (by what means).
The state (a collective of individuals) uses taxation and eminent domain to acquire their lands. This uses the initiation of force. Most people don't have the wherewithal, the defensive capabilities (either physical or legal), or the willingness to sacrifice their lives, in order to retain what was originally theirs. This initiation of force is not justified, but most will just give up ownership in exchange for their life.
In a free society, ownership of property still exists, it is recognized in a number of ways, but there is no justification for taking another man's property thru the initiation of violence.
Wow, I feel like I'm teaching kindergarten thru 4th grade! Repeat, repeat, "Please pay attention Jonny", repeat, repeat, "Hey Jonny, please keep your hands to yourself", repeat, repeat... Ad nauseum
I'm really beginning to wonder if you're trolling, or if there's more than a thousand ways to say the same thing, and still not get it across.