It does indeed seem a simple and very logical way to go - I guess on a practical level one has to ask , who would buy the acres needed for the Memory Forests and where?
Current Cemeteries are at breaking point for space.
I find them a bit creepy and alien but probably because it's a scary subject. I'd prefer it if my ashes were made into a ball of fertiliser and done that way rather than my body being curled up in a pod like that.