Cemeteries are meant to be visited. Unless the cemetery is serving the community as a positive, useful, fun, or informative place, it's going to get abandoned, run-down, overgrown, or forgotten.
Madness string 23221
If you've ever tried to besiege a castle in the dark with a drunk guy with comically oversized balls, you'd know that the main issue is that castles are specifically designed to stop this kind of caper.