If you do nothing with the land, you're inherently negatively impacting your neighbors property. First of all, i will end up suing you for allowing the spread of invasive species onto my property. Second, your forest is destroying my fence, sued. Third, if you have so much land you cant even use it, im gunna tell me friends to come squat and then what happens when 10 years later you discover them there? Big war, fun stuff.

Doing absolutely nothing with thousands of acres is how you get a mob at your gate.