I don't believe that healthy mature persons could be insane at any level.
But, let us recall always that humans are gifted to play any role we may imagine... including insanity
[1] But some people could be deceived by the advanced audio/visual techniques since they used to believe what they see and hear on their monitors..
[2] Some others just look where their interests are, even on a daily basis

[3] Also there are people who follow their elders, to be on the safe side.
[4] Unfortunately, there are people (likely young) who are ready to do anything in exchange for survival, if not for some other pleasant things
We like it or not, in the physical world, the strongest group wins; not the righteous powerless one

Also, it is not surprising to hear when a group wins: "We won because God is on our side"
