I agree that there's not always that much difference between addiction and dependence. Both can occur without the other or together.

When I've come off SSRIs in the past, I had to gradually reduce the dose to avoid getting withdrawal symptoms, but I didn't really notice any ill effects at all to be honest. There's much more of a desperate, uncontrollable element to addiction, whereas physical dependency can usually be controlled/managed much more easily, in most cases anyway.