This is another case of "bring your own fun" gaming. People who go in expecting nonstop fun without any effort on their part find an unscripted environment that requires the user to create the fun himself.
Depending on how you drive, if you shoot your guns constantly or not, if you deliberately set trees on fire and smash through shop windows or not, if you try your best to jump from every ramp you see and if you shoot your rockets into the sides trying to blow every building in the map, you can either have a fun time or a totally boring time.
I think its the same with all chaotic games like this, such as GTA, where some people cannot for the life of them see what the deal is, but others instantly find hours of fun just driving around doing stunts and causing havok and destruction.
Some people are pyromaniacs, some are natural born killers and others love to watch rally crash videos. I'm the last guy and I LOOOOOVE crashing cars.
All time fave car crashing games:
Stunts
Indy 500
Carmageddon1
Carmageddon2
GTA3 (though its physics system is adequate but not stellar)
- insert a next gen title with superb damage system and physics here -
Stuntman on the PS2 was one of the most promising titles what comes to physics and driving, and Driver3 just took that same engine an toned it down. Make Stuntman2 for 360 or PS3 and I will be there.
Which brings me to Driver3 as a game, absolutely flawed (on the xbox the entire istanbul level is unplayable because of constant slowdown) but the driving model is actually pretty good and its great to do stunts. Some people cant stand the driving model because its TOO realistic and hard (and those people shouldnt play driving games).
btw I just tried crashday demo for PC and what a waste of time that was, Carmageddon2 from 98 does it all 10 times better than that, anything from physics to driving.