What were the pros of attacking the beaches in Normandy?

Surprise being the first and main one. The Germans expected us to land at Pas-da-Calais. We had General Patton commanding a fake Army group across from that area to fool them. The actual German commander(Rommel) wasn't even at his command post when we landed on the beaches, he was with his wife. Utah beach wasn't as heavily defended as Omaha was. It could have been alot worse had Rommel had his way. No panzer divisons were close to the beach, that helped us out tremendously. Even after we landed, the German high command didn't believe it was the real landings. Their stupidity helped us out.