There is none, and the idea that it's at all a Left-Right issue is baffling. I personally don't like the idea on aesthetic principles but it's not the result of some Reactionist policy statement.

People being happy prosperous and free is the goal of Reaction; why would anyone bother with a philosophy which promised sadness poverty and slavery? The difference is entirely in the question of what sorts of conditions in the real world will lead to a good society, and that is a simple factual question.