Well, I like the colours, lighting (from the side, throwing shadows and giving definition to the carved writing), and the fact that some grass grew through the stone to create a bit of a mystery here. I quite like NOT to know who this person was, other than that this is a very old grave from over 100 years ago (you would NEVER find graves as old in Germany any more unless the buried person was [or: were?] a well-known someone - composer, writer, politician, something like that).
So I understand why you like this photo yourself, Pyrex, and why your friends stop at it when they go through your albums.
But I don't feel it has anything "morbid" to it. It is a grave, yes, but ...