To be honest, hammocks aren't for everyone. Sure there are a lot of us here who love it, but sometimes they just don't work for people. There is absolutely nothing wrong with sleeping in a tent and as long as a person gets out into the woods, I'm happy to share a fire with them.
With that said, an under quilt works wonders and will solve your cold problem. A good idea is to find some fellow hangers in your area that want to do a day hike or so and they can kind of show you the ropes. (How to get comfy, under quilts etc.)