Well, I must admit that I have walked into lamp-posts and the odd person while walking down the Main street in town and looking up at all the wiring underneath the verandahs in the other direction.
And when you walk as fast as I do, this tends to hurt a tad!.
Crooked or incorrectly installed TV aerials are something that always catch my eye too.
Looking at these and driving at the same time is probably not the safest, but it's just HABIT!.