I wonder why there are two stripes of happiness, Montana to Arizona and Texas to South Carolina. There does not seem to be much alignment with other demographic maps that I have seen.
Something about being contented with what you have, maybe? Rural vs. urban also plays a role.
But why is Georgia so happy and Alabama less happy? Why are you happy in Nashville and not so happy in the rest of Tennessee?
Why is Louisiana happy and Arkansas not? And does that last one have anything to do with the Clintons?