You guys sound extremely salty.
I had high end air suspension on my previous G37 for 4 years. Zero issues other than it requiring more maintenance. Rides great, there is no such thing as "bag elasticity/rebound degrading."
If there was they wouldn't be found on 1M mile semi's or be DOT approved.
I'd be willing to be the ones in here talking shit have no experience with air, they just despise the crowd that it's associated with.