I like the idea of being buried under a tree, something long lived, an Oak or Yew. Trouble is you just know that twenty years down the line this eternal woodland resting place would be closed, and be bought by developers for housing - bye bye trees graves et all.
I feel really bad about the poor peoples bones that are regularly pawed over by Baldrick and company on the TV program Time Team. On one program ancient graves had been left intact when modern houses had been built, the poor souls had been ready for eternal rest and instead some of them were damned to lie below suburban floorboards, MTV not RIP.
Not sure I care what happens to me when I am dead, I won't be there to see (or will I?)

Roger