How do Airbags Fail?

My front ones on a 1997 dynasty, just rotted away. All the rubber rotted loose and came off the liner. Just last week one of them sprung a leak. After we started the motor home we heard air leaking by the bag on entry door side. Pretty good stream, but you could reach in and put your finger on it and it quieted down so pressure wasn't great. Not sure when it failed. Day before we had driven it 600 miles and didn't notice it. Getting the air bags for this one is another problem, but I am going to replace all the front ones. Back ones are larger and seem to be in better conditon. Going to identify them and see what the availability is. I have been told the compressor can keep up so you can drive it. I'll let you know when I crank it up to take to the shop. Got to get the air bags first and than an appointment.