Assuming the AI hasn't taken it already, do you ever pick a pantheon other than Religious Settlements? It seems to me that getting that extra city out is so strong that it is my go to pick. Getting that prime city spot, growing the city sooner, producing units, science, culture, whatever is too good. The only time I consider something else is when the terrain allows for massive faith income with another pantheon and religion will factor heavily in my game plan. But even then an extra early city can help snowball you into lots of faith over the course of a game.