I'm not an athiest, never was. I'm too lazy to be one. But at one time, when I first got sober in AA, I was a very skeptical agnostic.
When someone suggested that my higher power (I don't like that term) could be a light bulb or a doorknob, I thought "geez don't insult my intelligence."
I might be an alcoholic but I'm not an idiot, and any approach to a spiritual way of life, whether it be thiestic or non-thiestic that doesn't challenge a person to stretch their mind and encourage one to think for themselves is pretty shallow, IMO.
Jim