It's like someone who hates school and just wants to go home. A lot of us feel that way. I did when I was younger as well. Why was I being punished here? Why did they send me here when I don't fit in?

Normal and it occurs when the passage from the Other Side to here doesn't completely wipe out our memories of past lives and home. Maybe you are meant to know those things for a reason. Find the reason and use it to live life to the fullest here. :) Maybe you are meant to teach others. :)