Some people might like it if we banned video games or candy or any number of other personal grudges. Things people see as frivolous or even unhealthy. But we have to keep in mind human psychology. Anything forbidden gains a certain fascination with us. Ban video games or candy, to continue the example, and it consumes us, so that it’s all we want.
But, if they are completely acceptable, they lose their extra allure. Kids learn that they don’t always feel great after eating candy, and they look for healthy alternatives. They play a game, then they grow bored and move onto something else. All harmless.
We don’t want to fall into the trap of forbidden fruit.