Write Now: Why do bad things happen?

I believe very strongly that everything happens for a reason, I also believe in a certain thing called Karma, karma states that everything that happens to you, happens to ou because of something you did in the past that would make you deserve it. I think evil exists to balance good, because nothing can be perfect, I believe, not even god. So in the end whos to blame? YOU are to blame, everything you do good or bad comes back to you, so in conclusion most everthing you do happens for a reason.