You have permission from all of the members above to listen to yourself. Nobody needs to go to a group with people whose outlook is so different from their own.
If you don't feel comfortable speaking about it, write it down, put it in envelopes, seal them and hand everyone a copy as you leave. Very hard to dismiss your insightful comments when written. It will give them something to think about & talk about. It may open their eyes. If it doesn't you're better off without them.
Forming a new group is an excellent idea.