I bought a Civic last year and payed the extra $250 for it. This potentially save my life, save my body parts, and save on medical bills. In addition my insurance company quoted me a price and I mentioned that I added the side air bags and they adjusted the price to save me $3 per month. So after 7 years I will make my money back and start to earn a profit.
Also I find the air bag quite entertaining at times. They have multiple sensors in the seat to determine if a child is sitting there and is leaning against the door. (It doesn't want to injure the child so it disables itself in that case). The funny part is my wife and one of our friends are both adults that weigh roughly 90-95 pounds. When they lean against the door, the airbag off light comes on and it always brings a laugh.