Well,, it's kind of like this question: Do you take a shower? If the answer is 'Yes' then you'll understand the need to flush your powersteering.
Simply put, it gets dirty. If your answer is 'No' - that's just lazy and kind of creepy :-) Powersteering fluid, much like oil and other fluids in your engine, contains additives. In addition, powersteering is one of the few systems in your car that does NOT have a filter on it. And if your steering doesn't work...guess what? You die. Let's not mess with this system so important to the drivability of our cars. Over the course of the vehicle's life, that fluid, which lubricates the powersteering system, gets dirty and is no longer keeping your system lubricated. As a result, metal parts will rub together and break.
Come into Cutshaw and get your oil changed, your brake pads changed and come get your powersteering system flushed. #TrustCutshaw