Agreed Ming.

There's a few areas of flight sims where 100% realism isn't desirable, sound is one of them. This issue also got turned over in the development of Lock On. Apparently in a modern jet fighter once you've got your helmet on and the cockpits closed your own engine is barely audible. The dev's decided to add engine noise. Its not 100% realistic but flying along in a PC sim without any sound isn't very immersive.

Sound is one area where I actually prefer the CFS series to IL2, a bit of Hollywood isn't always a bad thing. When I'm pretending to fly Mr Mitchell's masterpiece I want to hear big beefy sounds thundering from my speakers, sounds that stir my soul, sounds so beautiful that I'm almost moved to tears. Nothing else will do.