What made me leave the ground
I started backpacking in high school and we used to just bring a plastic (vapor barrier) tarp for shelter. I loved those light weight days even the experimenting with different tarp configs (some even worked) but hated the problems with water on the ground after it ran off your tarp.
When I had more money I purchased tents and sleeping pads in search of a comfortable sleep and was reasonably happy. Although sleeping on roots and rock and occasional ground water troubles, muddy tents and heavy poles left me wanting a better system.
Now that I am advancing in age (45), I am trying to find ways to lighten my load and was looking at bivy sacks and tarps to reduce weight. I live in northern Ontario, Canada where our provincial bird is the mosquito so I wasn't thrilled with the thought of going back to a tarp and feeding the "birds".
Then I discovered hammocks. lurked here for a year, watched many videos on Youtube and finally pulled the trigger on a Hennesey Asym Exp Zip.
Slept in it for the first time last night and I'm hooked.