Whether it's a motorbike perfectly centered
between building and street...
garbage waiting to be collected,
benches and tables from cafes spilling out to the street, a garden offering privacy to someone's front windows, a port-a-potty,
or just grown men dressed up for a renaissance fair having a pint... using the sidewalk becomes optional.
When we do find a scrap of sidewalk to corral our dogs we are reminded that people would really prefer them to be in the street ("Poop not on the stoop.")
So far we've only been cursed at once.