[OBW]

kumbaya kind of has it right. Just stop going. And assuming you still have a spiritual interest, find another group to meet with. Even figure the first move out before you take the plunge.

Just quit attending. Don't be rude, but don't feel obligated to give a reason. They will have an answer for everything, though not a meaningful one. You don't need to have that discussion until you are ready, if ever.