I've been hammock camping for about 10 years now... It's not always lighter, but is most certainly always more comfortable.
While I have an array of hammocks to choose from,(homemade- up to top of the line cottage industry) I tend to always use my Warbonnet Ridgerunner these days.
Hammock camping is my preferred way to camp down to about 30 degrees; below that, I go back to the ground with my Hilleberg Soulo. ( I feel more secure about possible snow loads this way)
I could camp below 30 in the hammock, if I were so inclined to invest in a hammock sock, and a heavier under quilt, but then the weight would really go up in the pack.
Hammocks are also great for "us" below the treeline, and on uneven terrain.
