That's a great question. In my opinion, I think they want to view different perspectives of people about them. I also think, that they want to know what are the bad qualities in them and what they can improve. I hope, that maybe one of them, that is seeing this thread could answer your question as well in their own perspective about this matter.
actually, it's not for attention they just want to know what people think of them and how they can change themselves
Maybe, but I see it as a way to fish for compliments. Inside that's what everybody wants. Like making a thread that's based around you seems kinda vain to me. I don't know... Just my opinion.