There is a John Deere setting in a flower bed not too far north of me. The guy built up a frame from landscape timbers around the tractor and it is partially submerged like the H in the picture. The tractor is an unstyled A or B but the point is that the tractor was shot and not worth salvaging. It looks good from a distance but up close you can see that it is only partly there. He shot some paint on it and painted "Retired" on the side of the hood where the JD decal would be. It looks good from the road but it is junk.
So what may seem to be a waste might not be so. The shine of fresh paint and a quick glance has sold many tractors to unsuspecting buyers who ended up with a money pit that should have been scrapped.
If well used, they will eventually wear out to the point that it is not economically feasible to keep them going. We hate to see that (and some won't admit that) but it does happen.
What better way to pay homage to a well used tractor than to let it live on as yard art where you can at least enjoy looking at it.