I think that's a really good point. Of course it's easier said than done, and any particular neighborhood environment could make it difficult to accomplish. I live in suburban Southern California. Our neighborhood is near the beach, about 150 years old. We have condo boxes, old post-WWII flats, ranch style houses, apartments, AirBnBs. I'm retired, loquacious, and I keep an eye out. I've met most of my neighbors, know them by name, and I try to stay out of their hair. I even say hello to the AirBnB peeps. We have an older lady next door, kind of a shut in. Never saw her outside. One day I left a note in her mailbox, introducing myself and my wife. Told her we were always around, and if she needed a hand once in a while (as we all do), we'd be able to help. She got back to me and was very grateful and happy I dropped the note. You never know, you might make someone's day or even save their life.