As a church-going atheist, I was very pleased to hear of this not-a-church "Sunday Assembly". It now means I have four different congregations to visit each month. One is quite spiritual, but also agnostic. Another is extremely political, and not very religious. A third is nominally Christian, but more interested in psychoanalysis and self-healing. And the fourth? Well, we're standing in it, and it is based on a very beautiful statement: "Live better, Help Others, Wonder More".
Such an appeal suits my love of philosophy. Around twenty years ago, I received a stiff piece of cardboard that said that I had a degree of expertise in loving philosophy, and since then I've continued this practise, often autodidactically by talking to the strange daimons in my head, sometimes with other people, and often at a group I convene entitled "The Philosophy Forum".