I have air bags on my Ram 3500 SRW and am glad I have them. Truck doesn't necessarily need them, but it sure takes the porpoising effect out of the ride, especially over bridge gaps. Really calms it down. I usually only run them at 35 psi.
Nice set up you have there.
2014 Eagle 34.5 BHTS FW
2016 Ram 2500 Laramie 4x4 Megacab
4.10 Rearend, bed cam, air suspension