Baba...to, for some crazy reason take this seriously, one of the biggest reasons you can't be a mod is because you have to be at least coherent and able to relate concepts to other people and help them understand them. You also have to listen and understand what they are saying to you. You can't even post in a way that everyone understands...how would you help posters that need assistance and help them understand a policy or a rule they need clarified? That is the biggest reason you won't be considered for a mod position, at least IMO.
My guess is because you're a pain in the ass. Though, I think I would actually consider you if I had my own board. When you choose to be you are intelligent and insightful and overall I think you'd be an asset. If you weren't I'd boot you....but I'd give you a chance, for what it's worth.