The Unforgiven

I wonder what I did in my previous life
Maybe I was really successful
Maybe I was just living averagely
Or maybe I was a criminal
When thinking about karma
I don't see why I could've been successful
Or even just average
I was probably a serial killer
But the worst thing is, I'll never know
I'll never know for sure what I was
All I can do is guess
But this is the best guess I have
Because people treat me poorly
They always have, and I never understood why
Maybe my actions were so horrible
That even strangers can't forgive me