I left AA after six months of sobriety, and I haven't looked back. I felt that AA was doing me more harm than good (still feel it was). But. If I'd felt that I didn't need a sober network, that I was recovered enough to do things on my own, you can bet I'd have taken that as a red flag and I'd still be going to meetings. I'll never be "fixed," and if I ever start to think I am, that's a sure sign of trouble.
Just my two cents. Have you tried asking your sponsor about it? I consulted with my sponsor before leaving AA and she agreed that it wasn't the right thing for me. (Condescendingly and with the implication that I'd be cursed to drink again if I left the program, but in her own way she did confirm that I was doing the right thing.)