How does giving land to an enemy "enhance security"?
When the settlers are finally gone, and the arabs take Gaza for their own, what then?
The arabs will use it as they use all their lands: as staging points to kill jews. How does this "enhance security?"
What has holding on to it done for security? It has worked well for S. Lebanon since Israel now has a border to defend incursions are far more obvious and the response is at Israeli discretion.