Some of my best friends from past & present are 'sidewalkers'. The memories and great times we shared is worth more than any amount of money in the world.
Most of my family are 'sidewalkers'. I love them all. (well, most of them haha )
I try not to judge people. You'll miss out on so many great relationships.
Not to mention it's impossible to exclude these types of people from your life even if you want to... I mean, who ya' going to hire?