I don't believe God created sin. We often think of sin as an action or a collection of actions. As a thing. But contemporary Christianity often teaches that sin is a state of being. The original Hebrew word for sin literally means "to miss the mark", or to fall short of God. Sin can be thought of as distance from God. Separation from the godly ideal. In this case, God didn't directly create sin. Sin came into being when he made distance from him an option. Unfortunately that's the option we went for. God didn't forbid ouf choice because like you pointed out, blind worship is meaningless. By giving us a choice, God ensured that: A. By choosing him we are turning our backs on an existence of sin. B. By choosing sin and then through his forgiveness accepting a second chance, we make a choice that is both meaningful and displays the mercy of God.

The most difficult point to consider is that God created us, so did he create us to choose sin? I don't believe so. I believe that he created us with the ability to choose God or sin. Knowing ahead of time what choice we will make doesn't mean he made that choice for us. It's not a satisfactory answer for some, and that's perfectly fine. I won't choose your beliefs for you, and I'm thankful for the chance to explain mine.