Way back in 1981, one of my first adventures in the Boy Scouts (I was 10) was a 50-mile backpacking trip. I used a hammock then. It was one of the old net style ones. VERY uncomfortable. Back in 2010, we took our Boy Scout troop (I'm currently an Assistant Scoutmaster) on their first 50 mile canoe trip on the Buffalo National River in Arkansas. I know that we'd be sleeping on gravel and sand bars. I don't care how big of a tarp that you put down on the sand and how careful you are, you'll wake up in the morning with sand in places that you didn't even know that you can get sand into.
I decided that I wasn't going to go through that. I broke down and bought an ENO (Eagles Nest Outfitters) "Single Nest" hammock. That was THE best week of camping that I have ever been on. If it's warm enough, I always sleep in my hammock anymore if I can find a place to set it up when the troop goes camping.