A problem with the Post Box

Something struck me as I was walking around the new place we live.
I was looking for a post box, to post the many letters one has to write when changing address, when I saw, about 100 yards in the distance, the distinctive red box on a post by the side of the road.
Excellent, that was easy I though as I wandered towards it. But oh no, what a mistake to make.
Am I the only one or has no one ever thought this through before.
The post box was a dog poop bin.
Who ever decided to make dog doodo bins red and about the size of a post box.
Ok, I was not fooled and spotted my mistake from a good 50 yards away, but I can't help wondering how many elderly folk, or those with eyesight problems, have not spotted the mistake and wonder why their letters never arrive.

In many countries the post box has and opening lid into which to deposit your letters. So when the tourists wonder why the post cards never get home it could just turn out that its not because the post office is shit after all.