My problem is with the level of Rules-Lawyers that exist in PFS. I simply don't have the time to memorize every new rule that comes out on a consistent basis, and Paizo loves to send out books each month (which I enjoy because it expands the game, yet frustrates me because I can't keep up). I know I could simply just not play PFS or not GM, but it really isn't an option. My son loves the Pathfinder game system and knows it well, and if I sign up just to play I often am asked to GM because I am a Three star PFS GM and they always have shortages at the conventions. Either way it defeats my purpose for attending; having fun with my son.
I don't play PFS, but I've heard there's a Core campaign that restricts characters to just the Core Rulebook. Is that something that that would be doable for you? Or play in a different organized play program that has a less rules intensive game structure?
If neither above will work for you, you have a bit of a dilemma. The duties that you feel put upon you (keeping up with all the rules such that you can manage rules arguments) conflicts with your desire for playing. I'm unfamiliar about how the GM/player dynamics work in PFS, so I'm don't know how much of the duty to keep up to date is actually needed in the organization. Is there anything preventing you from delegating players the duty to know specific parts of the rules material to help you make informed rulings?