This is a very strange line of logic for me. Tithing was to support ministry and God's purpose. The priests were given a portion, but traditionally tithing was for compassionate ministries. Even Paul continued as a tent maker, and it is by his example that we base our pastoral traditions. While I don't have a problem allowing the church to pay for a pastor, I don't necessarily believe it to be the primary purpose of tithing either. I have always assumed that I would be bi-vocational, that's just the way I was raised. I'm a bigger fan of home groups and such than centralized congregations, but that doesn't mean that I reject the idea of a larger church. I think that a church can do things that small groups can't, but groups also have some freedom that a church doesn't have. However the organizational structure works, the purpose is still clear. Bringing the Gospel to the world, and growing together as Christians is much more important than all other concerns.