Having been twice, I still think it's the most exotic place on earth to visit. I've been to more than 60 countries, and none were like the DPRK. The culture, people, food, customs... I think you'd only be less that wowed if you are steeped in Korean culture already.

'Guts to go' really should not be a factor. If you're going legally (on a tour group or pre-arranged 'independent' travel) you will be fine. Short of committing a major crime the worst they'll do is ship you out of the country back to China.