Biological viruses, religions, and computer viruses are actually all the same kind of thing. In short, they are small pieces of information that continuously copy and spread themselves between carriers.
Biological viruses spread by copying DNA and RNA;
religions spread by copying people's beliefs;
computer viruses spread by copying programs.
In The Virus of the Mind, Richard Brodie proposed that anything skilled at infiltrating, replicating, issuing instructions, and spreading can be called a virus. By the time I realized this, the world had already fallen into utter chaos.
Lin Jing'an, Shenghai City Urban Operations Memorandum, 2050
The plot is deeply rooted in people's hearts, and the more you watch it, the more you want to watch it. It makes you feel deep but not complicated.