PC "Back story", why is that a thing?

[minderp]

I must admit that I love amnesia characters *wicked grin*

God damn amnesia characters, hard to write well into a story without sounding cliche.
And then the orc showed up....
My character - "who are you?" .... "i dont know..."
"where did you come from?" .... "i dont know..."
"how old are you?" ... "i dont know..."
"family? friends? faith? anything?" ... "i dont know...."
"want to join us for no reason whatsoever to go while we go find a wizard to see a man about a dog?"
"........ sure."