Originally Posted by ALP
Joker has a backstory, we simply don't know what it is. Today I saw a strange looking fellow in plaid pants walking down the street. I didn't know his name and I didn't ask him his name therefore I will probably never know his name. But that does not negate the fact that he still has a name. The exact same thing goes for the Joker's origin. We don't officially know exactly what it is and we may never know but that doesn't negate the fact that he still has one.
I didn't say he didn't, I just said that we don't know what it is and I prefer it that way.