Why do monsters have to become human?

Because people are advanced animals, while monsters are ordinary animals, both people and animals have pursuits, with the aim of getting closer and closer to success. The ultimate goal of monsters is to become immortals. Of course, there are also special human figures to harm people. Another reason is that people in the human world are the most advanced animals with brains, so these monsters want to become human in order to get closer to them and facilitate them to do more things. Otherwise, appearing as a human being in a demonic image will surely cause people to panic and hinder them from doing anything.

In The Journey to the West's fairy tales, we can often see those monsters turn into people to deceive four Tang Sanzang, so as to eat Tang Sanzang's meat. In this way, they can live forever. Originally, the ultimate result of their immortality was immortality, but eating Tang monk meat can achieve the goal more directly. Therefore, transforming into human form means becoming immortal and living in this world forever. Monsters sometimes have simple ideas. Whether they are bad or not, kindness is kindness. What they want is generally clear and definite, but human beings are different. Human beings have too many complicated emotions, so even if they become human, they can't really become human.

There is also a kind monster who becomes human just for gratitude. This is the case with the Millennium Snake Demon White Snake. In order to repay Xu Xian for saving his life, she went to the world to look for Xu Xian, regardless of her thousand-year-old road. In the end, she was fascinated by Xu Xian's elegant temperament, and fell in love with him from then on, achieving a thousand-year love. White snake is a monster, but she has never done anything harmful. On the contrary, she is kind and knows how to repay kindness. She became human, just to avoid scaring her benefactor, Xu Xian.

Since ancient times, monsters have had many confusing behaviors, but if you think about it carefully, it is reasonable to just change the appearance of adults, because as long as there are living individuals, they will naturally look for ways and means to facilitate their work, whether they are people or monsters.