In my opinion, people shouldn't magically be given a parachute without having to take it from the inventory of the aircraft and equipping it before takeoff.
Also probably worth noting, most real world heli pilots don't carry parachutes. Nobody likes jumping head-first into what is essentially a blender.
ArmA is supposed to be a milsim. If you want wacky physics and hollywood antics, i hear the latest BF3 DLC is out.