Belief , like the traditional cult of the ancestors in China, where you have no “priest” or “guru”, it is just a bunch of people relying on elders to mimick the rituals, but in fact nobody remember it well, it is all disorganized, and nobody is really checking for “correctness” as much as checking if the commitment is done with intent. So the opposite of having a strong vertical domination by one person (cult) or an organized institution (religion) is a weak control of the rites by anyone (belief)
Industrial grade switches (i.e.: buttons) are expensive because of very high quality control requirements, and add a lot more parts that can fail to a car. It is the same thing that happened with mobile phones. Going with touchscreen reduce a lot the number of parts to check and parts that can fail, even if usability is very bad for the end-user.