We boondock because of the dogs. They will bark at anything they can see or hear, so we go where there isn't anything to get them going. The benefit is the silence, beautiful views and we may not see a soul for weeks. The dogs are never ever left alone inside or out. There are critters up there that like tender morsels like the dogs.
We don't really worry about someone breaking in for a few reasons. First a thief would really have to be desperate to drive hundreds of miles on low grade 4x4 trails hoping to find a rig, hoping it was empty and hoping something worthy was inside. the second is with all of the target practice we hear, I don't think it would be a good idea getting caught in some ones rig out in the middle of no where. You may never be seen again.
We also never worry about being towed. We can't stay longer than two weeks due to water and food limitations. So we would dump the tanks and reload as we moved to a new spot.
So true boondocking is a blast. Make sure your rig is up to the task as well as the trails it will be on. It took us 45 minutes to travel 4 miles this morning.