Look at the main Christian denominations associated with extremism, then look at where their main strength is. You’ll find a correlation to the US south.
As an example, look at the Global Methodist Church, which is liberating bigoted congregations from the United Methodist church. So far, it’s main (but not exclusive!) strength is in the south.
If you lived in a sparse, lonely place, with a bad economy, maybe joining a church starts sounding like a good idea.
Instead of judging people consider yourself lucky.