Edit: Read some of the comments and damn there are some destructive people so understand at this point. It's too bad. So take what I say below as the perspective of someone who is nieve about idiots and a LNT minded person.

Posted signs were one of the few things that I actually hated about VT. Coming from ME they were few and far between so encountering them was always jarring. In maine there was a joke that you knew when an out of stater moved in. The for sale sign went down, no trespassing go up.

What I found frustrating is the law is the same. Open permission unless posted, and landowner absolved of liability.

Now I get no hunting, trapping or any sort of activity that damages or relieves a person of something on thier land.....but just blatantly posting land that is wild and never seen just seems stingy. I admit, i am one of the bad ones, I did trespass often but never hurt or took anything. I would often see a nice trek on a topo and go without regard for the 15-20 lands I would cross, especially if only one was posted. That said....it was usually once or twice a year, the posted signs were blank with no ownership so wasn't going to waste my time trying to figure out the owner if I was only passing through for 20min.

Maybe I should ask, why do you feel the need to post your land against all uses? Why not selective?