I also stopped attending a UU congregation recently (they were fiercely resistant to it being called a church). I'm fully on board with the principles of Unitarian Universalism, but I also faced that kind of attitude there. The people had a middle-school cliquishness about them, as well as the yuppy tendencies so common to that whole town. What really put me off from them was when we had a food drive for a local food bank, and even after the second service, there were only two very small bags of groceries. The people there were all VERY comfortably middle class and could at the very least have brought a single can or box. If every family had brought a single item, that bin would have been overflowing. My family had very little when I was growing up and I know what it is to be genuinely hungry. I was considering looking for another UU place, though not many exist in my area. Thank you for the heads-up that this is common; I didn't know that.