Unsure about religious beliefs?

If I was in a situation for the past year where I didn't really believe the same hogwash that was fed to me as a child, but my family (including my husband does) should I express this to them. I feel like some of the things that they believe (and I used to) are completely idiotic and childish and full of fiction and fantasy. My inlaws are completely judgemental (they call it devout). Do I just keep it to myself? I feel an obligation to allow my child to come to her own decisions and I will not allow anyone to tell her that their way is the only right way.