If it's not too cold, or too windy, and if I'm going somewhere with trees, and I'm alone, and if I'm not counting ounces, a hammock works for me. I've had some great nights' sleep in them.

Site selection can be a double edged sword. You don't have to worry too much about what's on the ground.......so long as you can find two suitable anchors to hang from. That turned out to be more difficult than I thought.

I usually carry a hammock as a luxury item in addition to my sleep system. I can justify the 15 ounces when I use it as a very comfortable camp chair/sofa, or better yet as a place for a quick power nap halfway through a long day on the trail.