When I go to a garage sale I do not load everything into a truck and cram it into my house. In fact, if I find only a few good pieces that fit into my home decore I consider it a good day.
I approached The Purpose Driven Life with the "Garage Sale mindset" and found a numer of useful things therein. I felt no compulsion to buy it all and start a PDL franchise.
Having done it this way, it was worth the price of the book easily.
I don't have my copy of Purpose Driven Life where I'm at. I lent it to my dad. But, as I recall, it was dead-on as far as it went. But the framework Warren uses is that man was created with certain purposes:
I challenge anyone to show me where this is in error. This may be simple theology -- heck, it's the basics, but it is quite Biblical.
Ultimately, how is this fundamentally different from the old Reformed viewpoint, embodied by the Westminster Catechism -- that the "chief end of man is to glorify God and enjoy Him forever"?