The answer to the question is probably. Most homes that I have come across during a home inspection seem to lack a splash block or leader at the end of the downspout to lead the water coming down the spout away from the foundation of the property. It may seem like no big deal now, but if your home has a faulty drainage system or missing leaders than your in for big trouble. One of the major problems to a home is water damage. When there is no device to lead the water away, what happens is that the water coming down the spout will just start to pool around the foundation wall. Over time your foundation wall will start to crack and deteriorate, and then you will have water coming into the home, and once that happens more problems will follow; mold, mildew, pest, and damage to your home, which will be very costly to repair. So if your one of the many who do not have a leader or splash block at the end of your downspouts, I recommend going to your local hardware store and purchasing one for each downspout. Also check to make sure that gutters and downspouts are functioning properly and not in need of repair or cleaning.
Check out these websites for more supplies for your home: