Because they spent a lot of time, energy and money to raise me bit by bit, and my parents gave me life. When I need them, I don't even know who or where they are. Maybe I will be laughed at by others because of their existence, or others will comment that my parents have no parents, which will undoubtedly hurt me a lot. At this time, I would rather be born of adoptive parents than admit that I am my own, so I abandoned my parents.
Even if they didn't dislike me, I think they didn't do anything for me, didn't raise me, didn't stay with me, and lost those days, which means they lost my feelings for them. It is false to say no hate. This question is the same for everyone. As a child, what she needs most is the company of her parents. In fact, from a child's point of view, what she hates most is that her parents use my excuse of being nice to you to arrange everything for her child, even if she doesn't need it.
Some decisions made by many adults, to put it bluntly, are to make excuses for themselves, what is good for children, and even don't know what children really need. Of course, there are also some children who are eager for their fathers, and their mothers are eager for their fathers and can accompany them. When they see their biological mother, they can still accept their biological father and mother. But for most people, parents who are not around will feel strange after a while. Even if they are with you, you won't feel that kind of affection, only a strong sense of strangeness. At that time, you can get along well again. I feel that for those who have never raised us, it feels like strangers, and there is no difference. Even if they gave birth to us, it's the same. Maybe they just don't care, because we are used to a day without them.