Priority Seats

Japanese trains should not have a priority seat, I think. There are many young people and adults who sit on a priority seat even in crowded trains. They don't understand the reason why priority seats are in the trains. If the train is not crowded, they are probably allowded to sit on a priority seat. However, actually it is not for inconsiderate people, so as long as there are foolish people in the train, Japanese trains should not prepare priority seats, I think.