You're wrong in both statements.

"The problem is that you need force to hold onto land others use,"
On the contrary, that is your problem. I have the land. You would make the claim that I shouldn't have it. I disagree. I have no need for violence unless it is in reaction to violence perpetrated by you. If you remain non-violent, perhaps I will give you an apple from my tree as a sign of good will. Then again, I may trade with you in exchange for goods or services.

Never made any statement against private property. I'm good with it.