I stopped editing Wikipedia because of the insane levels of administrator bias and collusion among them and teams of professional editors. They will get what they want no matter how wrong they are, and I will never lend them my time just so they can be more credible as a result of the content the community curates. In my view, the worse Wikipedia is, the more people will realize it should be taken with a grain of salt.

EDIT: Have you got any hard evidence of CIA or Intelligence Community editing? The final straw for me was egregious rule breaking that I strongly believe the U.S. Government was responsible for.