I used to think about the waste of space although I have always loved visiting graveyards. Here in Australia, though, where in most of the settled areas the native vegetation has been replaced by introduced plants, the old country graveyards are tiny pockets of indigenous grassland and wildflowers, so that they are actually very valuable. Sadly as communities get interested in "cleaning up" these areas they tend to become lawn and roses. The world already has enough lawn and roses, while here in Victoria there is 0.05% left of the indigenous wildflower grassland.
We have a wonderful graveyard at a place called Whroo. It is hidden in a woodland and White-winged Choughs call from the trees. These birds have the saddest cries and they are big and black with red eyes. The marble stones are all askew or lying in the grass. It dates from the goldrush of 1852 when the settlement began as a tent city, went on to a tiny town and then became a ghost town. Nobody much visits it now which is great.