I just wrote this for a discussion board in one of my seminary classes and thought it would make a good blog post. This sums up a good deal about how I feel about churches that only focus on themselves and do little to nothing to impact their community.
When a pond gathers water and has no way for the water to get out, the water becomes stagnant. The same is true for a church. When there is too much "eating", as it were, and no "exercising", we begin to have churches that are full of spiritually fat Christians. It should be the desire of every pastor to push his people into the community and to have them make an impact for God, not simply to sit in a pew and get fatter.