Wife had minor surgery this morning. While in recovery, nurse saw I had the PHB with me and said, "Gosh, that led to suicides some years ago. Very sad." Her judgy pants were pulled in tight.
I've never ran into anyone who was actually serious about such absurd notions, though. It must be a surreal experience for those who have.
I find it amazing that role-players are considered an occult danger, when we have people running around with this kind of magical world-view. Who is the believer in magic here?...even pretending to be a character who casts spells or portraying fictional demons gave real power to and drew attention from The Devil.
As a counterpoint, and in the interest of fairness, I knew people when I was in college who were seriously into their gaming fantasies, to the point of being scary. ..

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.