I want real danger for a change.

Living in a persistent ant state of bliss is good, but only for a while. It's not real. The way the human psyche is set up, there is bound to be conflict. A human cannot mentally handle being happy all the time. Let's approach this from a scientific point of view. Happy thoughts are caused by things called endorphins (if I'm wrong here then please be gentle in your criticisms). As with any stimulus, the body would ultimately become used to to endorphins and they would lose their effect. So, the fact of the matter is that happiness can only ever be fleeting. For people to truly live a full life, they must experience a full range of emotions. This also hearkens back to the concept of you can't really know happiness unless you've felt sadness. In a utopia, there is no discord (other than the entire existence of the utopia itself, despite the fact that those involved in the utopia aren't aware of this), so by this logic there can't actually be happiness. Due to the lack of the full range of emotions in this case, the people in this society don't live full lives. While they themselves my not realize it, it takes a certain more attentive and in tune group to realize that we were meant to live for so much more. (Have we lost ourselves?)