The only problem there East, is that they assume it's 'fun' because it's not difficult. That's a really poor definition.
There's tons of things I can do that are extremely difficult, but they are satisfying and enjoyable, and that equates into fun.
We should agree to disagree, that while the hand-eye coordination of eight year olds in today's world is sick compared to say eighty years ago; we have to recognize that their attention span is near zero.
In the end, development goes where the money is; and just because it looks and sounds 'realistic,' doesn't mean it is.
Crysis should be a sufficient example.
Indeed it's very hard to say whats fun and whats not it totally depends on the person.
Fun to me changes a lot day to day how i feel all though i find Arma harder than COD \ MOH \ Crysis and the rest of them and challenges me. Other game's don't my thinking thoughts are blocked by most due to limited ways in completing some thing.
Were as with Arma ( try the dam demo already ) you need to think on a large scale even larger if you set a server up on the hardest possible settings. But balance the settings to find were the fun starts.
For example 1. friendly markers enemy markers show on map or not all though you might like the friendly ones but not the enemy's. And if you turn the friendly ones off you need to be able read a map lol.
Example 2. Iron sights on or off which having them on would mean you would need to be more aware of were your weapon is pointing.
Example 3. 1st \3rd person, i enjoy 1st person much more than 3rd person but time to time i use it when driving which is about 2% of the game if that.
Example 4. The dam map is 50KM you can use loads of different weapons depending on how the mission maker has made the mission you can decide whats best for you. Like you can check the whole area out before attacking which depends on your play style.
Example 5. I play the game with a average of 3000m viewing distance and take advantage of a situation. Depends on your mood to do you give in easy and what you like.
Examples i can make 100 of them as arma has 100 + things that other games don't but if any thing i like more than any thing is FREEDOM and to knew that my team mates will back me up and i will adjust to there requirements if it's to cover or watch over or just collect intell.
Tell ya what there's not many games you can use a 107 from 500-1300m away from your target lol.
Soldier simming? Does it have that crap your pants smell after you get shot at the first time? If not than its not a simulation.
. So folk are interested in a game that offers best of both worlds, realism along with games style that's entertaining and fun to play. Looking at both forums OPF: DR appears to have more activity then Arma II if that has any meaning well see when the demo is out. 
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