You didn't describe the accident in any real detail. Pictures would also help.
Plenty of accidents result in cars which end up being totalled, and yet the airbags don't deploy.
Glad you are ok though, and like others say, count your blessings and move on.
A gen-u-ine BMW eff-eight-zero with them tandem clutches in the transmission and that dad gum sun roof on the top-a da cawr.