Torsion bars for better handling; your experience?

are you not limiting the suspension /body roll when you put in super stiff springs/ torsion bars?....isn't that why it is done?....so why not just limit it completely, providing you are not going over any whoop-de-doos and need suspension travel....its not like you are worried about hitting a rut or bouncing off the cushion needing suspension travel. Mainly it is a pole-putt on a flat (parking lot) surface.