Totally agree with you on this. A neighborhood is a perfect source for genuine human interaction.Take your dog and/or kid for a walk through the neighborhood as the weather warms up and stop and talk to people that are out working in their yards. Even if its just to complement their yard or whatever. Ask them what plants they just put in or what kind of trees they have. Alternatively if you have yard work to do stop when someone is on a walk and say hi. Its the perfect low stress interaction that'll kick start conversation. That might lead to waving and potentially further conversation.
Neighborhoods are being designed around reclusiveness. This weekend I'll be pulling out some rose bushes and putting in a fire pit, in our front yard. This is a great read for anyone that lives in a neighborhood