Simple version: they are ignorant. More complex version: Secrecy- Secrecy scares many people. They assume that the only reason to keep a secret is because that secret is immoral or evil. read more
There are some things you won’t find online, but there aren’t any real secrets. In fact, I believe Morals & Dogma by Albert Pike and Stellar Theology & Masonic Astronomy by Robert Hewitt Brown cover most of it. Those two books describe practically everything there is to know about the esoteric side of Freemasonry. Why I left Freemasonry. read more