I think part of the problem is the way airbags have been portrayed in the media in US. You ask in countries out of US and a lot (if not most) people know that airbags, while being instrumental in saving people's lives, are secondary restraints and use explosive charges to operate -- the majority of people that I know out of US knows that airbags can be dangerous.
And yet, the majority of people I know here, I had to educate about the issue. Just look at every single footage of airbags operating that is shown in America. It's always the super-slow motion, it takes several seconds for the airbag to inflate, then the crash test dummy hits it, then it falls back in the seat, the airbag deflates and it's over 20-30 seconds of footage and *no* sound, which is totally incomprehensible to people like me that knows that a crash is a fraction of a second. I've seen the real movies from the crash tests, with the real sound turned on.
Finally, a friend's sister, driving her expensive luxury car, with the seat belt fastened and everything, had a very low speed crash (both cars were going at something like 15-20 miles per hour on the parking lot of a mall) during which she rear-ended the car in front of her because of something, I forgot if it was a wild animal running in front of the car or something. Anyway, not much damage to the cars, her face was all abraded, and she said, and I quote:
"...and the airbag never deployed, there was this loud bang, and powder everywhere and the plastic bags were just hanging from the steering wheel and the passenger-side, I dunno!"
And we had to explain to her that no, in fact the airbags *had* deployed, and, while her face was hurt, it was better than having her fact through the windshield or the steering wheel. I know because I had friends in those accidents with cars that had no airbags.
After that, my friends started wearing their seatbelts more often, but it wasn't until the small kids started dying because they were seating on the front passenger seat, that most of them started wearing their seatbelts.
The thing to remember is that airbags are just like ejection seats: they are operated by explosive devices, they are dangerous and they save lives, but they are to be used as a last resort -- you would definitely prefer mild injuries to your face/body to smashing your face/body in the steering wheel, dashboard or windshield, but the airbags are deployed in excess of 200 MPH and deflate nearly instantly and you do not want to meet it without the help of a seatbelt. You also do not want to be smoking a pipe (or at all, really) when it deploys. And, according to the account of at least one friend or two, you want, if possible, to refrain from reaching towards the dashboard or putting the arms in front of your face when you realize you are about to crash -- keep your arms near the legs to avoid breaking them or being punched in the face.