CAUTION: rambling may result in boring unfortunate readers to death.
So, here's the breakdown.
~ Unitarian Universalism came to be when two churches combined: the Universalists (Christians who believed EVERYONE is saved and goes to heaven, not just those who worship God) and Unitarians (who believed in only one god, not the Holy Trinity).
~ While it comes from Christian roots and some all-Christian UU churches exist, most congregations allow people of ALL religions. And I mean ALL. You can have atheists and pagans in the same congregation as Christians and Jews. EVERYONE is welcome, because there...