I think this is prompted by the fact that I was born 72 years ago today and I am in a contemplative state today.
Cremation saves a lot of space and simplifies exiting quite a bit. But I wonder how green it is? First of all there's all that natural gas required and no doubt quite a bit of smoke, carbon, and other pollutants are produced. Normal casket burial is just wrong; expensive, primitive, wasteful. We're getting around to rather responsible burials with paper shrouds, thin coffins, etc. But why not what would seem to be a more natural point between cremation and burial --- composting. I mean, really, you do away with the real estate needed, and it's probably more energy efficient than cremation. Plus, you contribute to the earth; fertilizer. 
Sure, standard burial eventually equals composting but it's a long, drawn out process. Besides, raking a couple bushels of human Rapid-Gro into the soil makes more sense than a 6-foot hole, stone markers, a mahogany box and a concrete liner.I'll pass on thinking about how the process should take place. A giant wood chopper or a blender/pulper is something I'd just as soon not dwell on, thank you. Still, it's a thought. Just sayin'.