I am an aetheist, but I attend Mass every Sunday with my wife.
She is a Catholic, and appreciates the faith aspect, I just enjoy the ritual, and the community spirit.
I know that in terms of living Christian values, I can hold my head a deal higher than some of those within the church hierarchy, but that's simply the way it is - I feel no sense of superiority, or inferiority about their belief systems compared to mine.
I don;t think there is a 'wrong' reason to go to church - there are the established religious reasona, and myriad others, including mine, but the church is nothing if not inclusive, so I am made to feel welcome as a supporter - which I am.