GAAHHH!!! I get so tired of people saying that. We are a religion. Just because we don't conform to your idea of religion doesn't mean it isn't authentic. I believe in a higher-power, I say grace at the table, I observe certain holidays, I pray, I come together every Sunday in community, I read sacred texts to help discover deeper life meanings. How is this not living my religion? UU supports and encourages all these activities. How is that different then yours? Yes, I totally grant that UU isn't for everyone. It really isn't. But, for those it is right for - it is meaningful and powerful.
That is my two-cents. I just wish I had the presence of mind to say that second paragraph to my friend. Instead I sat library duty thinking of all the things I could/should have said. It also occurred to me that my friend didn't appear at all to think it an insult to consider my faith not real. I am sure if I had insulted Christianity, it would mortally wound our friendship.