I recently made a post in a facebook discussion about my belief that Tithing is the churches biggest hermeneutical hypocrisy. Many of the posts and responses simply affirmed "Tithing is a biblical teaching" "Tithing is a requirement of Scripture" etc... The only major passage in the bible that directly deals with tithing is in Malachi, and while this teaching is used as a justification for the command to tithe (which Jesus never taught by the way) these same people go to great lengths to explain that when Malachi says "God hates Divorce" he wasn't really serious.
See when I look at what Jesus taught he says that the good shepherd gives his life for his lambs. He says do not worry about what you will eat or what you will drink or what you will wear... but seek first the Kingdom of God and His Righteousness, and all these things will be added to you as well. There are reasons to give to the support of the church, in fact you can be an agent of God's provision. But the reality that needs to be highlighted is that when people don't tithe, it's not an indicator of "lack of faith" - but whenever a preacher tells you to Tithe; that is.