Like a lot of others have posted before me, I have had trouble with things like autos, advertising signs and power lines in my photos. One photo in particular was of a "Shay" locomotive in a Northern Ontario lumber town where the engine is on display and the town decided to illuminate it with a lamp fed from a power pole directly behind the smoke stack. I took my best shot at it, but regardless, the pole looks like an out of place appendage.
I had intended the photo as a print for a friend who has a large collection of model trains and when I gave him the framed print, he said he loved it and he missed the pole completely. When I pointed it out to him, he said it didn't matter and he never would have noticed it anyway as it looked like a natural part of a display background.
Since then I've pretty much stopped worrying about those sorts of things. The things that bother me when I'm taking the photo likely will be considered interesting in a few decades anyway.