Have you ever driven behind a vehicle with worn shocks or struts and watched how the backend bounces up and down and even goes sideways at times? 

This could be happening to you if your vehicle has over 50,000 miles with the original equipment.  Shocks and struts were designed with more than just comfort in mind.  The safety of your vehicle is greatly dependent on the quality of good shocks and struts.  Traveling at 50 mph, your braking distance could be increased as much as 10-12 feet with 50% worn shocks or struts.  The maneuverability of your vehicle is greatly diminished with worn shocks and struts and could mean the difference between an accident or not.  You and your family are at higher risks while driving with weak or leaking shocks and struts.  Have them inspected regularly while servicing your car.