John Piper and the Prosperity Gospel

This is a video that I found on Benjamin Euler's blog. John Piper is talking about the Prosperity Gospel.
I have to say I can understand why he is so angry about this. I come from a background in a prosperity Gospel church and I've seen first-hand the damage that this false teaching does.

It raises expectations for God to deliver and when God doesn't give wealth, health and joy, people question  their faith, their righteousness and eventually leave the faith. Prosperity Gospel IS NOT a good thing.

I think my experience with the prosperity gospel is what gave me the passion I have for confronting false teaching. That's about the only benefit that my dealing with it have had.