I'm with whiplash, while it may be completely pointless and impossible to commute on, it is more of the sport, think bobsled and luge... both are basically going downhill as fast as possible, that one is just a variation. While it may not do anything but downhill, be highly dangerous and not so comfortable, it would also be insanely fun to ride.
Maybe I'm just suicidal, but those kind of things get the adrenalin pumping, and whatever gets that stuff flowing, I like. The more dangerous it is, the more chance I have of getting myself killed if I stuff up, the more likely I am to try something. Knowing that the only thing between you and death is your own skill and ability is how you know you are alive.
If you are rating it as a bike, it sucks, but if you are rating it as a product it is in the same category as snowboarding, skiing, bungy jumping, skydiving, longboarding, the list goes on. Pointless in the scheme of things, but fun none the less.