Zeb, I agree with moreconfusedthanever. They just don't know what to say. The last time I saw a car group parked in a driveway in my neighborhood, I walked up just to say hello. I don't play their stupid shunning game.
The sister in the driver's seat was clearly uncomfortable. She squirmmed and stammered, "Oh, I see you have the same dog." Two of them gave the standard line, "We miss you so much!" I just laughed and reminded them that I live in the same house I've lived in for 30 years. I didn't point out that I know that I'm on the Do Not Call list. The fourth just glared at me and said nothing.
I simply don't care. They can be as self-righteous and judgmental as they want. The fact is, they've been driving around the same neighborhoods, in the same cars, with the same people, knocking on doors that nobody answers for their entire adult lives. They look old and hollow. Their lives are small, sad and pathetic. I don't miss them.
The Borg has turned them into robots. I pity them. They can keep their "best life ever." I'm living mine every day. Oh, and I made sure to let my neighbor know that the Witnesses were contacting his foreign-born wife and warned him what they were up to. He thanked me. Don't let them get you down!