What makes you think you're a bad parent in the future?

What makes you think you'll be a bad parent in the future? I just wonder because the lyrics "I can be a good mother" are in my fyp, so I just want to share what I think because I will probably become a bad parent in the future because I am too perfect. I want my child to be perfect. I strive for perfection, but at the same time, I hate perfection. I also can't become a good parent because I don't want to grow up. I still want to be a kid (I'm 20 years old). I waste my 4 years of my life ლ(´ڡ`ლ)