Many people are getting married later in life, after they have accumulated all the household goods they need. Or, they may not want a lot of material things...
Whatever the reason, consider this idea. Instead of registering your wedding at a store - why not register it with a charity. Ask your guests to contribute to it. They get a tax receipt. You get the satisfaction of starting your marriage off having made not just your own world, but the rest of the world - a better place.