I have a '05 so only front airbags. It bothers me somehow, but not enough to ditch the car.
However, trying to mitigate some risks by buying the safest car seat I can buy today, it’s a small price to pay and this is exactly what I'm doing.
On the same note, eventually, I was thinking to ditch the car seat I have (Eddie Bauer) for a better one (e.g. Britax Frontier).
One other reason to have a safe, good car seat is a car accident where the airbags don't deploy or there is no major structural impact on the car, but the impact on a toddler could be significant.
I always pay attention when I strap my daughter in the car seat in order to do it correctly (as recommended), periodically check the fit on the car seat itself (the belts may get loose over time), etc...