Beach replenishment, when it means simply pumping massive amounts of sand on the nearshore, seems to create as many problems as it solves. I remain convinced that there must be a way to replenish the beach in a way that mimics the natural state of a barrier island.
The natural state of a barrier island is one that moves slowly inland. Try reading "Ribbon of Sand" by John Alexander sometime. It is about OBX, but explains barrier islands quite well. If there were no beach replenishment projects, the beachfront homes would all fall into the ocean eventually, and the land would be claimed by the ocean. Add to that the fact that the inlets also usually move in a southerly direction, most homeowners would eventually be SOL.