AA is not necessary for recovery, but it may be useful as one of the tools in your recovery tool kit. AA appeals to me because it aligns with my own spiritual beliefs, so I see it as a good, free general curriculum for living that I would enjoy whether or not it had anything to do with alcoholism. I do good to get to 1 meeting a month, but where I do find the value is in my relationship with a like minded sponsor with long-term sobriety.
I would consider SR as my mainstay of sobriety and my "go to" in those moments when the going gets really tough.