Trees - shmees.
I'm actually headed to Nevada in about a month for a week worth of visiting. I intend to camp in my hammock for the majority of the trip. The area I'm going to has, I think, a total of about 40 trees. Course, they are all at a local nursery. Even so, I have no fear of being able to find a place to hang. I'll have a rental vehicle, so I've already got half of the required anchor points; just need to find one more that I can get the vehicle close enough to so I can attach.
I welcome the challenge of treeless hangs. They keep us thinking outside of the hammock box.