The so-called monster is actually just an obsession in people's hearts.
Some people say: Since you are a monster, why do you do evil?
Not really.
Demons often spend millions of years cultivating their human form. Compared to those who do no evil and have evil hearts, they are still far behind. What people generally demand is that they only have human form and do not have human hearts.
The human heart is probably the most complicated thing in the world.
Mechanisms and puppets are unintentional things, but once they have a heart, what should they do?