Well, thanks for your comments. Russell seems to be advising, 'don't take the shot if modern artifacts have destroyed a nostalgic past'.
Dark Penguin seems to be the only one who thinks the wires should stay. My own feeling is I should clone out the wires and I probably wouldn't have had second thoughts about it had I not shown this image as part of a slide show on a 1368x1024 projector.
However, I now see that the image that was part of the slide show was not the one above, but an almost identical one shown below, the main difference being that the power lines are better lit in this shot and are therefore more prominent. On a relatively low resolution projector they gave the impression of jet trails, which is probably why it was thought I should not clone them out.
There's also a cow in the foreground in this shot. Not sure if that contributes anything to the composition.
Of course, I'd rather leave the wires in, if I can get away with it. I've got many such shots. Don't want to spend days of my life cloning out power lines .