In my visits to the west, the most common response I hear to sermons is something to the effect: "I enjoyed that sermon." Sermons should disturb, convict, and motivate to radical and costly obedience. I have wondered whether people's desired result from sermons is to enjoy themselves rather than to be changed into radical disciples who will turn the world upside down. If this is so, the church has assimilated the postmodern mood that considers inner feelings more important than commitment to principles... Such a church may grow numerically, but it would not be able to produce the type of missionaries that the world needs - men and women who will pay the price of identification with the people they serve and endure the frustrations that involves.
Ajith Fernando, Jesus Driven Ministry, p.23
I think it's important to point out though, that our ultimate enjoyment is most found in the sort of radical discipleship Fernando talks about. The real distinction is between short-term pleasure in wordly comfort and delight in God, both long-term and short-term (as Piper). The distinction is one of faith.