Why the heck don't we know our neighbors?

I met Lois today, my next door neighbor. Our garages touch. I've lived here three weeks and two days and just met Lois. I was outside photgraphing my duplex when my neighbors' door opens. I had a feeling she wanted to introduce herself sooner but there wasn't an opportune time. Barefoot, I walked up the driveway and said "Hi, how are you?" She never stepped out of her doorway but was pleasant the whole time we spoke. We shared names, talked about how the street was so quiet and nice, talked about where we'd previously lived and all that jazz. She then told me she comes and goes at random times and doesn't want to hit one of my boys when she pulls out of her garage. That was nice of her. I am not sure she's annoyed by them riding down her side of the driveway or if she is genuinely concerned for their saftey. Either way we met, conversed, and had our neighborly moment. Not sure how much we'll have to talk about in the future as she's 73 and I'm young enough to be her grandchild. I did tell her neighbors just don't talk as much anymore and she went on telling me how busy people are these days and ran through a typical day of hers. She is a busy woman. I hope to talk to her again sooner than later.