Interesting Experience w/ Lease Listing

I have had this listing for a month now, and have had probably at least six interested parties tell me how much they love the property and definitely want it. Several of these prospective tenant's have gone so far as to submit applications and have their credit ran, and even given financial documentation to support and verify their applications. In the end, not sure what changes, but have just had many of them frankly flake. It is something I just don't understand. If you want a property for you and your family, it's available and let's do it. The people not willing to sign the dotted line once the time comes just perplexes me. Because of these people, the property is still unbelievably still available. It is such a deal and a nice house. Who's going to actually follow through and get to enjoy this fine property in the Hollywood Hills?