i don't know why- i never did. My Grandfather passed away, God Rest his Soul, when I was 8 years old so I've spend a LOT of time in cemeteries. I think people fear the unknown, when the fear they should have is living an unfulfilled life.
The photo above was shot in Barbados, is completely untouched, and there's a lot of creepy colorful glares on it.
It's also one of the oldest tombs in the cemetery we'd visited.