Pros:
-Military sandbox of your dreams
-Very moddable
-Numerous clans
-Active modding scene
-Excellent singleplayer campaign
-Mission editor that can be used by rookies, but has advanced features
-Comprehensive options menu that will let you alter your experience to your taste

Cons:
-Hardware intensive
-Difficult learning curve
-Public servers aren't the best

Pros: -Military sandbox of your dreams -Very moddable -Numerous clans -Active modding scene -Excellent singleplayer campaign -Mission editor that can be used by rookies, but has advanced features -Comprehensive options menu that will let you alter your experience to your taste Cons: -Hardware intensive -Difficult learning curve -Public servers aren't the best