there's no shame in walking it.
Although I feel a little shame if I had to take a cab when the remainder of the ride is walking distance i.e. less than 3 miles (for me anyways).

Today I've had my worst experience yet. I must have ridden over a patch of broken glass.
In a 6 mile ride, I had to stop 3 times to patch the rear tire.
Feel real stupid for not checking after the 1st patch if there were any other shards.

Have to admit, I did very breifly think about calling a cab.