I don't know how the geocachers that logged DNF's go geocaching, but I generally read the logs of previous folks. Sometimes this gives me important clues about the site. The "those who served" logs told me without to much ado that there would be stinging insects here. Perhaps a note in the description about the possibility of getting stung going after this would have helped. I dunno I even saw humor in the log of the person who got stung. Didn't see it as a personal attack. I think you've got one or two problem cachers giving you trash. Grow thick skin and ignore it. At least you're there to watch the site and make sure the cache is still there. About the "onion rings":I'm new enough to the sport that I wouldn't even have minded searching the alley. I'd for sure go back there just to look for the mouse that was mentioned. I don't like bad coords either, but again I'd read the logs and see that this wasn't really all as easy as it might seem. I pay little attention to the ratings. My only thought is that I will find it and log it.
My two cents on this is that you are caring for the caches, they are there, and you have a valid way to contact you. More than is available at some caches. I see me snagging the "those who served" one in the winter time when the insects aren't quite as busy.