TH-
I lost golf balls often because I hit a block 40 yards right of my line, or because I hit a 40 yard hook with a 5 iron into a par 4. Is losing a ball under these circumstances a design flaw? Hardly so - it's pilot error, and the balls that I lost I'd be hard pressed to find ANY course where I wouldn't lose the ball hitting the same shot.
The 2nd at Pacific Dunes is considered by many to be a great golf hole, yet I believe it takes much less to lose a ball on that hole than it does at most of the holes at Prairie Dunes.
To me, it's tons of fun because I control my own destiny. The aspect of chance is certainly present (rolling fairways, ground game) but you really feel like you are in control of taking calculated risks and approaching the element of chance from an angle of your choosing.
I witnessed David Kelly play, I believe, 2 full rounds without losing a ball. I had separate stretches of between 10 and 13 holes played with the same ball. Sure, it's not the most forgiving course on the planet, but I believe it gets a bad rap on this narrowness stuff.
Let the record show that of my lost balls in the first 2 days, only 1 in 36 holes came as a result of my tee shot. The others were poorly executed or overly risky shots (trying to juice a 5 iron from a hanging lie, a hooked hybrid, an ill-advised 3 wood on the 17th hole).
I think it's a reasonable expectation of a player that his shot to the green be held to a higher standard of accuracy than the tee shot, and in my 6 plays I found that the area of my game which was most lacking was my accuracy from 150-200 yards, and that was the area where I suffered the most punishment.
Why is it fun aside from this? As I said, the course itself and the narrowness aside, the movement of the land (FAR more than I'd ever imagined in Kansas) and the movement of the holes, the bending of fairways, and the small but ingenius greens, were a continuous challenge - a challenge you always THOUGHT you could solve, but far less often actually could. That, to me, is part of my definition of fun: Makes you think you can, and gives you a chance to do so, but doesn't necessarily allow you to succeed too often.
EDIT-
This definition for me mostly applies to near and around the greens....and my "one-feature" analysis on the greens.
The other thing that makes it fun to me is that this one feature can often times dominate your thinking even on the tee. I.E. the 18th hole, if you have a back pin you are thinking about how close to the right edge of the fairway you can get. If you are on the 11th tee and you (somehow) know that the pin is back right, you are thinking about how you can get your ball as far right as possible to avoid the single hump short-middle. This, to me, is great design and smart contouring (as opposed to making a wild green where 98% of the emphasis is on how precise you can make your approach shot to the green).