Now, as soon as I say that, I start to get uncomfortable. Yes, and there isn't a person on God's green earth who is not hypocritical. One of the terrible tragedies I encounter regularly are the people who stop worshiping God because they feel that they are not holy enough to come into God's presence. I hear it so often. We stopped coming because I'm in the middle of a divorce.
Sin is a condition.
It is a state of being into which we all belong. It is to the super pious and the people consumed with the reality of sin in their lives that Jesus tells this parable to. Why, when you get right down to it, even Jesus didn't root out sin among his own disciples. He kept Judas who betrayed him, even though Jesus knew he would be betrayed. He kept James and John who argued openly about which of them was the best disciple.