There is nothing any number of bad bishops, priests, or laity can do that can change the fact that the Catholic Church is the Church founded by Jesus Christ. The Church has always had plenty of sinners. Namely, everybody.
Having sinners in an organization is one thing. Having an organization that leads people to sin is another. It is precisely because I love Christ that I cannot love that which calls itself "Catholic" in 2013.
Christ indeed passed the Keys to the Kingdom to Peter, but something went horribly, irretrievably wrong along the way to today. As God gave me the ability of discernment, God wants me to use it.